diff --git a/bsp/apollo2/board/rtc.c b/bsp/apollo2/board/rtc.c
index 1bc4779257..dbae7cf3c1 100644
--- a/bsp/apollo2/board/rtc.c
+++ b/bsp/apollo2/board/rtc.c
@@ -25,6 +25,7 @@
 #include <rtthread.h>
 #include <rtdevice.h>
 #include "am_mcu_apollo.h"
+#include <sys/time.h>
 
 #define XT              1
 #define LFRC            2
@@ -78,13 +79,13 @@ static rt_err_t rt_rtc_control(rt_device_t dev, int cmd, void *args)
             /* Seconds 0-59 : the 0-59 range */
             time_temp.tm_sec = hal_time.ui32Second;
 
-            *time = mktime(&time_temp);
+            *time = timegm(&time_temp);
 
             break;
 
         case RT_DEVICE_CTRL_RTC_SET_TIME:
             time = (time_t *)args;
-            time_new = localtime(time);
+            time_new = gmtime(time);
 
             hal_time.ui32Hour = time_new->tm_hour;
             hal_time.ui32Minute = time_new->tm_min;
diff --git a/bsp/at32/Libraries/rt_drivers/drv_rtc.c b/bsp/at32/Libraries/rt_drivers/drv_rtc.c
index 48c634cdf2..bd4d89a9ed 100644
--- a/bsp/at32/Libraries/rt_drivers/drv_rtc.c
+++ b/bsp/at32/Libraries/rt_drivers/drv_rtc.c
@@ -10,6 +10,7 @@
 
 #include "board.h"
 #include <rtthread.h>
+#include <sys/time.h>
 
 #ifdef BSP_USING_RTC
 
@@ -42,7 +43,7 @@ static time_t get_rtc_timestamp(void)
     tm_new.tm_year = ERTC_DateStruct.ERTC_Year + 100;
 
     LOG_D("get rtc time.");
-    return mktime(&tm_new);
+    return timegm(&tm_new);
 #else
     return RTC_GetCounter();
 #endif
@@ -56,7 +57,7 @@ static rt_err_t set_rtc_time_stamp(time_t time_stamp)
 
     struct tm *p_tm;
 
-    p_tm = localtime(&time_stamp);
+    p_tm = gmtime(&time_stamp);
     if (p_tm->tm_year < 100)
     {
         return -RT_ERROR;
diff --git a/bsp/bluetrum/libraries/hal_drivers/drv_rtc.c b/bsp/bluetrum/libraries/hal_drivers/drv_rtc.c
index 9e84490158..99483cb544 100644
--- a/bsp/bluetrum/libraries/hal_drivers/drv_rtc.c
+++ b/bsp/bluetrum/libraries/hal_drivers/drv_rtc.c
@@ -10,6 +10,7 @@
 
 #include "board.h"
 #include <time.h>
+#include <sys/time.h>
 
 #ifdef BSP_USING_ONCHIP_RTC
 
@@ -26,7 +27,7 @@ static struct rt_device rtc;
 uint8_t get_weekday(struct tm *const _tm)
 {
     uint8_t weekday;
-    time_t secs = mktime(_tm);
+    time_t secs = timegm(_tm);
 
     weekday = (secs / 86400 + 4) % 7;
     return weekday;
@@ -115,7 +116,7 @@ void hal_rtc_init(void)
     tm_new.tm_mday = 29;
     tm_new.tm_mon  = 1 - 1;
     tm_new.tm_year = 2021 - 1900;
-    sec = mktime(&tm_new);
+    sec = timegm(&tm_new);
 
     irtc_time_write(RTCCNT_CMD, sec);
 }
diff --git a/bsp/essemi/es32f0271/drivers/drv_rtc.c b/bsp/essemi/es32f0271/drivers/drv_rtc.c
index 23bab4dc16..3e2cdd17a3 100644
--- a/bsp/essemi/es32f0271/drivers/drv_rtc.c
+++ b/bsp/essemi/es32f0271/drivers/drv_rtc.c
@@ -12,6 +12,7 @@
 #include <rtthread.h>
 #include <rtdevice.h>
 #include <string.h>
+#include <sys/time.h>
 #include "board.h"
 #include "drv_rtc.h"
 
@@ -96,14 +97,14 @@ static rt_err_t es32f0_rtc_control(rt_device_t dev, int cmd, void *args)
             time_temp.tm_mday   = date->day;
             time_temp.tm_mon    = date->month - 1;
             time_temp.tm_year   = date->year - 1900 + 2000;
-            *((time_t *)args) = mktime(&time_temp);
+            *((time_t *)args) = timegm(&time_temp);
             break;
         }
         case RT_DEVICE_CTRL_RTC_SET_TIME:
         {
             rt_enter_critical();
             /* converts calendar time time into local time. */
-            pNow = localtime((const time_t *)args);
+            pNow = gmtime((const time_t *)args);
             /* copy the statically located variable */
             memcpy(&time_temp, pNow, sizeof(struct tm));
             /* unlock scheduler. */
diff --git a/bsp/essemi/es32f0334/drivers/drv_rtc.c b/bsp/essemi/es32f0334/drivers/drv_rtc.c
index 2ce6a408b1..9471368454 100644
--- a/bsp/essemi/es32f0334/drivers/drv_rtc.c
+++ b/bsp/essemi/es32f0334/drivers/drv_rtc.c
@@ -12,6 +12,7 @@
 #include <rthw.h>
 #include <rtthread.h>
 #include <rtdevice.h>
+#include <sys/time.h>
 #include <string.h>
 #include "board.h"
 #include "drv_rtc.h"
@@ -59,14 +60,14 @@ static rt_err_t es32f0_rtc_control(rt_device_t dev, int cmd, void *args)
         time_temp.tm_mday = date.day;
         time_temp.tm_mon = date.month - 1;
         time_temp.tm_year = date.year - 1900 + 2000;
-        *((time_t *)args) = mktime(&time_temp);
+        *((time_t *)args) = timegm(&time_temp);
         break;
 
     case RT_DEVICE_CTRL_RTC_SET_TIME:
 
         rt_enter_critical();
         /* converts calendar time time into local time. */
-        pNow = localtime((const time_t *)args);
+        pNow = gmtime((const time_t *)args);
         /* copy the statically located variable */
         memcpy(&time_temp, pNow, sizeof(struct tm));
         /* unlock scheduler. */
diff --git a/bsp/essemi/es32f0654/drivers/drv_rtc.c b/bsp/essemi/es32f0654/drivers/drv_rtc.c
index 32a68c3011..cab5b8b61b 100644
--- a/bsp/essemi/es32f0654/drivers/drv_rtc.c
+++ b/bsp/essemi/es32f0654/drivers/drv_rtc.c
@@ -12,6 +12,7 @@
 #include <rthw.h>
 #include <rtthread.h>
 #include <rtdevice.h>
+#include <sys/time.h>
 #include <string.h>
 #include "board.h"
 #include "drv_rtc.h"
@@ -59,14 +60,14 @@ static rt_err_t es32f0_rtc_control(rt_device_t dev, int cmd, void *args)
         time_temp.tm_mday = date.day;
         time_temp.tm_mon = date.month - 1;
         time_temp.tm_year = date.year - 1900 + 2000;
-        *((time_t *)args) = mktime(&time_temp);
+        *((time_t *)args) = timegm(&time_temp);
         break;
 
     case RT_DEVICE_CTRL_RTC_SET_TIME:
 
         rt_enter_critical();
         /* converts calendar time time into local time. */
-        pNow = localtime((const time_t *)args);
+        pNow = gmtime((const time_t *)args);
         /* copy the statically located variable */
         memcpy(&time_temp, pNow, sizeof(struct tm));
         /* unlock scheduler. */
diff --git a/bsp/essemi/es32f369x/drivers/drv_rtc.c b/bsp/essemi/es32f369x/drivers/drv_rtc.c
index 32a68c3011..cab5b8b61b 100644
--- a/bsp/essemi/es32f369x/drivers/drv_rtc.c
+++ b/bsp/essemi/es32f369x/drivers/drv_rtc.c
@@ -12,6 +12,7 @@
 #include <rthw.h>
 #include <rtthread.h>
 #include <rtdevice.h>
+#include <sys/time.h>
 #include <string.h>
 #include "board.h"
 #include "drv_rtc.h"
@@ -59,14 +60,14 @@ static rt_err_t es32f0_rtc_control(rt_device_t dev, int cmd, void *args)
         time_temp.tm_mday = date.day;
         time_temp.tm_mon = date.month - 1;
         time_temp.tm_year = date.year - 1900 + 2000;
-        *((time_t *)args) = mktime(&time_temp);
+        *((time_t *)args) = timegm(&time_temp);
         break;
 
     case RT_DEVICE_CTRL_RTC_SET_TIME:
 
         rt_enter_critical();
         /* converts calendar time time into local time. */
-        pNow = localtime((const time_t *)args);
+        pNow = gmtime((const time_t *)args);
         /* copy the statically located variable */
         memcpy(&time_temp, pNow, sizeof(struct tm));
         /* unlock scheduler. */
diff --git a/bsp/hc32f4a0/drivers/drv_rtc.c b/bsp/hc32f4a0/drivers/drv_rtc.c
index 4ccaa46253..27e3a665df 100644
--- a/bsp/hc32f4a0/drivers/drv_rtc.c
+++ b/bsp/hc32f4a0/drivers/drv_rtc.c
@@ -8,8 +8,11 @@
  * 2020-10-30     CDT          first version
  */
  
-#include "board.h"
+#include <board.h>
 #include <rtdbg.h>
+#include <rtthread.h>
+#include <rtdevice.h>
+#include <sys/time.h>
 
 #ifdef BSP_USING_RTC
 
@@ -33,7 +36,7 @@ static time_t hc32_rtc_get_time_stamp(void)
     tm_new.tm_wday = stcRtcDate.u8Weekday;
 
     LOG_D("get rtc time.");
-    return mktime(&tm_new);
+    return timegm(&tm_new);
 }
 
 static rt_err_t hc32_rtc_set_time_stamp(time_t time_stamp)
@@ -42,7 +45,7 @@ static rt_err_t hc32_rtc_set_time_stamp(time_t time_stamp)
     stc_rtc_date_t stcRtcDate = {0};
     struct tm *p_tm;
 
-    p_tm = localtime(&time_stamp);
+    p_tm = gmtime(&time_stamp);
     if (p_tm->tm_year < 100)
     {
         return -RT_ERROR;
diff --git a/bsp/imxrt/libraries/drivers/drv_rtc.c b/bsp/imxrt/libraries/drivers/drv_rtc.c
index 84e9e51074..96ae1006fa 100644
--- a/bsp/imxrt/libraries/drivers/drv_rtc.c
+++ b/bsp/imxrt/libraries/drivers/drv_rtc.c
@@ -10,6 +10,8 @@
  *
  */
 #include <rtthread.h>
+#include <rtdevice.h>
+#include <sys/time.h>
 
 #ifdef BSP_USING_RTC
 
@@ -39,7 +41,7 @@ static time_t get_timestamp(void)
     tm_new.tm_mon  = rtcDate.month - 1;
     tm_new.tm_year = rtcDate.year - 1900;
 
-    return mktime(&tm_new);
+    return timegm(&tm_new);
 }
 
 static int set_timestamp(time_t timestamp)
@@ -47,7 +49,7 @@ static int set_timestamp(time_t timestamp)
     struct tm *p_tm;
     snvs_hp_rtc_datetime_t rtcDate = {0};
 
-    p_tm = localtime(&timestamp);
+    p_tm = gmtime(&timestamp);
 
     rtcDate.second = p_tm->tm_sec ;
     rtcDate.minute = p_tm->tm_min ;
diff --git a/bsp/lpc55sxx/Libraries/drivers/drv_rtc.c b/bsp/lpc55sxx/Libraries/drivers/drv_rtc.c
index 5e160bc471..c277d82079 100644
--- a/bsp/lpc55sxx/Libraries/drivers/drv_rtc.c
+++ b/bsp/lpc55sxx/Libraries/drivers/drv_rtc.c
@@ -8,12 +8,13 @@
  * 2018-03-15     Liuguang     the first version.
  * 2019-07-19     Magicoe      The first version for LPC55S6x
  */
-
+ 
+#include <rtthread.h>
+#include <rtdevice.h>
+#include <sys/time.h>
 #include "drv_rtc.h" 
-
 #include "fsl_common.h" 
 #include "fsl_rtc.h"
-#include <time.h>
 
 #ifdef RT_USING_RTC
 
@@ -37,7 +38,7 @@ static time_t get_timestamp(void)
     tm_new.tm_mon  = rtcDate.month - 1; 
     tm_new.tm_year = rtcDate.year - 1900; 
 
-    return mktime(&tm_new);
+    return timegm(&tm_new);
 }
 
 static int set_timestamp(time_t timestamp)
@@ -45,7 +46,7 @@ static int set_timestamp(time_t timestamp)
     struct tm *p_tm;
     rtc_datetime_t rtcDate; 
     
-    p_tm = localtime(&timestamp);
+    p_tm = gmtime(&timestamp);
     
     rtcDate.second = p_tm->tm_sec ; 
     rtcDate.minute = p_tm->tm_min ; 
diff --git a/bsp/ls1cdev/drivers/drv_rtc.c b/bsp/ls1cdev/drivers/drv_rtc.c
index 0569992c61..ef1398fe47 100644
--- a/bsp/ls1cdev/drivers/drv_rtc.c
+++ b/bsp/ls1cdev/drivers/drv_rtc.c
@@ -12,6 +12,7 @@
 #include "board.h"
 #include "drv_rtc.h"
 #include <rtdevice.h>
+#include <sys/time.h>
 
 #include "../libraries/ls1c_regs.h"
 #include "../libraries/ls1c_rtc.h"
@@ -44,7 +45,7 @@ static time_t get_timestamp(void)
     tm_new.tm_mon  = rtcDate.Month- 1; 
     tm_new.tm_year = rtcDate.Year + 2000 - 1900; 
 
-    return mktime(&tm_new);
+    return timegm(&tm_new);
 }
 
 static int set_timestamp(time_t timestamp)
@@ -52,7 +53,7 @@ static int set_timestamp(time_t timestamp)
     struct tm *p_tm;
     RTC_TimeTypeDef rtcDate; 
     
-    p_tm = localtime(&timestamp);
+    p_tm = gmtime(&timestamp);
     
     rtcDate.Seconds= p_tm->tm_sec ; 
     rtcDate.Minutes= p_tm->tm_min ; 
diff --git a/bsp/ls2kdev/drivers/drv_rtc.c b/bsp/ls2kdev/drivers/drv_rtc.c
index ef8dfcda82..3cea0288be 100644
--- a/bsp/ls2kdev/drivers/drv_rtc.c
+++ b/bsp/ls2kdev/drivers/drv_rtc.c
@@ -14,7 +14,7 @@
 #include <rthw.h>
 #include <rtthread.h>
 #include <rtdevice.h>
-#include <rtthread.h>
+#include <sys/time.h>
 #include "ls2k1000.h"
 
 #ifdef RT_USING_RTC
@@ -128,7 +128,7 @@ static rt_err_t rt_rtc_ioctl(rt_device_t dev, int cmd, void *args)
     hw_rtc = dev->user_data;
 
     t = (time_t *)args;
-    time = *localtime(t);
+    time = *gmtime(t);
 
     rtctm.sys_toyread0 = hw_rtc->sys_toyread0;
     rtctm.sys_toyread1 = hw_rtc->sys_toyread1;
@@ -137,29 +137,29 @@ static rt_err_t rt_rtc_ioctl(rt_device_t dev, int cmd, void *args)
 
     switch (cmd)
     {
-    case RT_DEVICE_CTRL_RTC_GET_TIME:
-        *t = mktime(&tmptime);
-        break;
-    case RT_DEVICE_CTRL_RTC_SET_TIME:
-        tmptime.tm_hour = time.tm_hour;
-        tmptime.tm_min  = time.tm_min;
-        tmptime.tm_sec  = time.tm_sec;
+        case RT_DEVICE_CTRL_RTC_GET_TIME:
+            *t = timegm(&tmptime);
+            break;
+        case RT_DEVICE_CTRL_RTC_SET_TIME:
+            tmptime.tm_hour = time.tm_hour;
+            tmptime.tm_min  = time.tm_min;
+            tmptime.tm_sec  = time.tm_sec;
 
-        tmptime.tm_year = time.tm_year;
-        tmptime.tm_mon  = time.tm_mon;
-        tmptime.tm_mday = time.tm_mday;
+            tmptime.tm_year = time.tm_year;
+            tmptime.tm_mon  = time.tm_mon;
+            tmptime.tm_mday = time.tm_mday;
 
-        rtctm = mkrtctime(&tmptime);
-        /* write to hw RTC */
-        hw_rtc->sys_toywrite0 = rtctm.sys_toyread0;
-        hw_rtc->sys_toywrite1 = rtctm.sys_toyread1;
-        break;
-    case RT_DEVICE_CTRL_RTC_GET_ALARM:
-        break;
-    case RT_DEVICE_CTRL_RTC_SET_ALARM:
-        break;
-    default:
-        break;
+            rtctm = mkrtctime(&tmptime);
+            /* write to hw RTC */
+            hw_rtc->sys_toywrite0 = rtctm.sys_toyread0;
+            hw_rtc->sys_toywrite1 = rtctm.sys_toyread1;
+            break;
+        case RT_DEVICE_CTRL_RTC_GET_ALARM:
+            break;
+        case RT_DEVICE_CTRL_RTC_SET_ALARM:
+            break;
+        default:
+            break;
     }
 
     return RT_EOK;
diff --git a/bsp/nrf5x/libraries/drivers/drv_rtc.c b/bsp/nrf5x/libraries/drivers/drv_rtc.c
index e7a7359523..ab65192395 100644
--- a/bsp/nrf5x/libraries/drivers/drv_rtc.c
+++ b/bsp/nrf5x/libraries/drivers/drv_rtc.c
@@ -11,7 +11,7 @@
 #include "board.h"
 #include <rtthread.h>
 #include <rtdevice.h>
-
+#include <sys/time.h>
 #include <nrfx_rtc.h>
 #include <nrfx_clock.h>
 
@@ -118,7 +118,7 @@ static rt_err_t rt_hw_rtc_register(rt_device_t device, const char *name, rt_uint
 
     RT_ASSERT(device != RT_NULL);
 
-    init_time = mktime(&time_new);
+    init_time = timegm(&time_new);
     if (rt_rtc_config(device) != RT_EOK)
     {
         return -RT_ERROR;
diff --git a/bsp/nuvoton/libraries/m480/rtt_port/drv_rtc.c b/bsp/nuvoton/libraries/m480/rtt_port/drv_rtc.c
index 804c0a0a0c..a80ac79627 100644
--- a/bsp/nuvoton/libraries/m480/rtt_port/drv_rtc.c
+++ b/bsp/nuvoton/libraries/m480/rtt_port/drv_rtc.c
@@ -14,6 +14,7 @@
 #if defined (BSP_USING_RTC)
 
 #include <rtdevice.h>
+#include <sys/time.h>
 #include <NuMicro.h>
 
 /* Private define ---------------------------------------------------------------*/
@@ -183,8 +184,8 @@ static rt_err_t nu_rtc_is_date_valid(const time_t *const t)
 
     if (!initialised)
     {
-        t_upper = mktime((struct tm *)&tm_upper);
-        t_lower = mktime((struct tm *)&tm_lower);
+        t_upper = timegm((struct tm *)&tm_upper);
+        t_lower = timegm((struct tm *)&tm_lower);
         initialised = RT_TRUE;
     }
 
@@ -225,13 +226,13 @@ static rt_err_t nu_rtc_control(rt_device_t dev, int cmd, void *args)
         tm_out.tm_hour = hw_time.u32Hour;
         tm_out.tm_min = hw_time.u32Minute;
         tm_out.tm_sec = hw_time.u32Second;
-        *time = mktime(&tm_out);
+        *time = timegm(&tm_out);
         break;
 
     case RT_DEVICE_CTRL_RTC_SET_TIME:
 
         time = (time_t *) args;
-        tm_in = localtime(time);
+        tm_in = gmtime(time);
 
         if (nu_rtc_is_date_valid(time) != RT_EOK)
             return RT_ERROR;
diff --git a/bsp/nuvoton/libraries/nuc980/rtt_port/drv_rtc.c b/bsp/nuvoton/libraries/nuc980/rtt_port/drv_rtc.c
index 98b3f1b228..49418316d1 100644
--- a/bsp/nuvoton/libraries/nuc980/rtt_port/drv_rtc.c
+++ b/bsp/nuvoton/libraries/nuc980/rtt_port/drv_rtc.c
@@ -14,6 +14,7 @@
 #if defined (BSP_USING_RTC)
 
 #include <rtdevice.h>
+#include <sys/time.h>
 #include <NuMicro.h>
 #include <drv_sys.h>
 
@@ -184,8 +185,8 @@ static rt_err_t nu_rtc_is_date_valid(const time_t *const t)
 
     if (!initialised)
     {
-        t_upper = mktime((struct tm *)&tm_upper);
-        t_lower = mktime((struct tm *)&tm_lower);
+        t_upper = timegm((struct tm *)&tm_upper);
+        t_lower = timegm((struct tm *)&tm_lower);
         initialised = RT_TRUE;
     }
 
@@ -226,13 +227,13 @@ static rt_err_t nu_rtc_control(rt_device_t dev, int cmd, void *args)
         tm_out.tm_hour = hw_time.u32Hour;
         tm_out.tm_min = hw_time.u32Minute;
         tm_out.tm_sec = hw_time.u32Second;
-        *time = mktime(&tm_out);
+        *time = timegm(&tm_out);
         break;
 
     case RT_DEVICE_CTRL_RTC_SET_TIME:
 
         time = (time_t *) args;
-        tm_in = localtime(time);
+        tm_in = gmtime(time);
 
         if (nu_rtc_is_date_valid(time) != RT_EOK)
             return -(RT_ERROR);
diff --git a/bsp/raspberry-pi/raspi3-32/driver/drv_rtc.c b/bsp/raspberry-pi/raspi3-32/driver/drv_rtc.c
index 8a33e2be64..147504bd16 100644
--- a/bsp/raspberry-pi/raspi3-32/driver/drv_rtc.c
+++ b/bsp/raspberry-pi/raspi3-32/driver/drv_rtc.c
@@ -8,12 +8,15 @@
  * 2019-07-29     zdzn           first version
  */
 
+#include <rtthread.h>
+#include <rtdevice.h>
+#include <sys/time.h>
 #include "drv_rtc.h"
 
 #ifdef BSP_USING_RTC
 
 #define RTC_I2C_BUS_NAME      "i2c0"
-#define RTC_ADDR            0x68
+#define RTC_ADDR               0x68
 
 static struct rt_device rtc_device;
 static struct rt_i2c_bus_device *i2c_bus = RT_NULL;
@@ -185,13 +188,13 @@ static time_t raspi_get_timestamp(void)
     tm_new.tm_min  = ((buf[1] & 0x7F) / 16 + 0x30) + (buf[1] & 0x7F) % 16+ 0x30;
     tm_new.tm_sec  = ((buf[0] & 0x7F) / 16 + 0x30) + (buf[0] & 0x7F) % 16+ 0x30;
 
-    return mktime(&tm_new);
+    return timegm(&tm_new);
 }
 
 static int raspi_set_timestamp(time_t timestamp)
 {
     struct tm *tblock;
-    tblock = localtime(&timestamp);
+    tblock = gmtime(&timestamp);
     buf[0] = 0;
     buf[1] = tblock->tm_sec;
     buf[2] = tblock->tm_min;
diff --git a/bsp/raspberry-pi/raspi3-64/driver/drv_rtc.c b/bsp/raspberry-pi/raspi3-64/driver/drv_rtc.c
index e38393bbd0..18fd6474a2 100644
--- a/bsp/raspberry-pi/raspi3-64/driver/drv_rtc.c
+++ b/bsp/raspberry-pi/raspi3-64/driver/drv_rtc.c
@@ -8,7 +8,9 @@
  * 2019-07-29     zdzn           first version
  */
 
-
+#include <rtthread.h>
+#include <rtdevice.h>
+#include <sys/time.h>
 #include "drv_rtc.h"
 
 #ifdef BSP_USING_RTC
@@ -33,13 +35,13 @@ static time_t raspi_get_timestamp(void)
     tm_new.tm_min  = ((buf[1] & 0x7F) / 16 + 0x30) + (buf[1] & 0x7F) % 16+ 0x30;
     tm_new.tm_sec  = ((buf[0] & 0x7F) / 16 + 0x30) + (buf[0] & 0x7F) % 16+ 0x30;
 
-    return mktime(&tm_new);
+    return timegm(&tm_new);
 }
 
 static int raspi_set_timestamp(time_t timestamp)
 {
     struct tm *tblock;
-    tblock = localtime(&timestamp);
+    tblock = gmtime(&timestamp);
     buf[0] = 0;
     buf[1] = tblock->tm_sec;
     buf[2] = tblock->tm_min;
diff --git a/bsp/stm32f20x/Drivers/drv_rtc.c b/bsp/stm32f20x/Drivers/drv_rtc.c
index 3c70a417d2..6078a15249 100644
--- a/bsp/stm32f20x/Drivers/drv_rtc.c
+++ b/bsp/stm32f20x/Drivers/drv_rtc.c
@@ -115,7 +115,7 @@ static rt_err_t rt_rtc_control(rt_device_t dev, int cmd, void *args)
         /* Change the current time */
         //RTC_SetCounter(*time);
 
-		to = localtime(time);
+		to = gmtime(time);
 		RTC_TimeStructure.RTC_Seconds = to->tm_sec;
 		RTC_TimeStructure.RTC_Minutes = to->tm_min;
 		RTC_TimeStructure.RTC_Hours	= to->tm_hour;
diff --git a/bsp/swm320-lq100/drivers/drv_rtc.c b/bsp/swm320-lq100/drivers/drv_rtc.c
index 51597ba73d..5219a5b013 100644
--- a/bsp/swm320-lq100/drivers/drv_rtc.c
+++ b/bsp/swm320-lq100/drivers/drv_rtc.c
@@ -13,7 +13,7 @@
 #include <rtdevice.h>
 #include <board.h>
 #include <string.h>
-#include <time.h>
+#include <sys/time.h>
 
 /**
  * This function will get the weed day from a date.
@@ -92,12 +92,12 @@ static rt_err_t swm320_rtc_control(rt_device_t dev, int cmd, void *args)
         time_temp.tm_mday = dateTime.Date;
         time_temp.tm_mon = dateTime.Month - 1;
         time_temp.tm_year = dateTime.Year - 1900;
-        *((time_t *)args) = mktime(&time_temp);
+        *((time_t *)args) = timegm(&time_temp);
         break;
     case RT_DEVICE_CTRL_RTC_SET_TIME:
         rt_enter_critical();
         /* converts calendar time time into local time. */
-        pNow = localtime((const time_t *)args);
+        pNow = gmtime((const time_t *)args);
         /* copy the statically located variable */
         memcpy(&time_temp, pNow, sizeof(struct tm));
         /* unlock scheduler. */
diff --git a/bsp/w60x/drivers/drv_rtc.c b/bsp/w60x/drivers/drv_rtc.c
index fbf6060691..fa0aee498c 100644
--- a/bsp/w60x/drivers/drv_rtc.c
+++ b/bsp/w60x/drivers/drv_rtc.c
@@ -11,7 +11,7 @@
 
 #include <rtdevice.h>
 #include <rtthread.h>
-#include <time.h>
+#include <sys/time.h>
 #include "wm_regs.h"
 #include "wm_irq.h"
 #include "tls_common.h"
@@ -42,7 +42,7 @@ static time_t wm_get_timestamp(void)
     tm_new.tm_min  = (ctrl1 & 0x00003f00) >>  8;
     tm_new.tm_sec  =  ctrl1 & 0x0000003f;
 
-    return mktime(&tm_new);
+    return timegm(&tm_new);
 }
 
 static int wm_set_timestamp(time_t timestamp)
@@ -52,7 +52,7 @@ static int wm_set_timestamp(time_t timestamp)
 
     struct tm *tblock;
 
-    tblock = localtime(&timestamp);
+    tblock = gmtime(&timestamp);
 
     ctrl2  = tls_reg_read32(HR_PMU_RTC_CTRL2);  /* disable */
     ctrl2 &= ~(1 << 16);
@@ -84,7 +84,7 @@ static int wm_alarm_set_timestamp(struct rt_rtc_wkalarm *wkalarm)
     time_t timestamp = 0;
 
     timestamp = wm_get_timestamp();
-    tblock = localtime(&timestamp);
+    tblock = gmtime(&timestamp);
 
     tls_irq_enable(PMU_RTC_INT);
 
diff --git a/components/dfs/filesystems/elmfat/dfs_elm.c b/components/dfs/filesystems/elmfat/dfs_elm.c
index 82d04ae0cc..d8c38e96ae 100644
--- a/components/dfs/filesystems/elmfat/dfs_elm.c
+++ b/components/dfs/filesystems/elmfat/dfs_elm.c
@@ -21,7 +21,7 @@
 #include "ffconf.h"
 #include "ff.h"
 #include <string.h>
-#include <time.h>
+#include <sys/time.h>
 
 /* ELM FatFs provide a DIR struct */
 #define HAVE_DIR_STRUCTURE
@@ -800,7 +800,7 @@ int dfs_elm_stat(struct dfs_filesystem *fs, const char *path, struct stat *st)
             tm_file.tm_min  = min;         /* Minutes: 0-59 */
             tm_file.tm_sec  = sec;         /* Seconds: 0-59 */
 
-            st->st_mtime = mktime(&tm_file);
+            st->st_mtime = timegm(&tm_file);
         } /* get st_mtime. */
     }
 
@@ -956,7 +956,7 @@ DWORD get_fattime(void)
     /* lock scheduler. */
     rt_enter_critical();
     /* converts calendar time time into local time. */
-    p_tm = localtime(&now);
+    p_tm = gmtime(&now);
     /* copy the statically located variable */
     memcpy(&tm_now, p_tm, sizeof(struct tm));
     /* unlock scheduler. */
diff --git a/components/drivers/rtc/alarm.c b/components/drivers/rtc/alarm.c
index ea1b150e7a..d8e4e468a7 100644
--- a/components/drivers/rtc/alarm.c
+++ b/components/drivers/rtc/alarm.c
@@ -13,10 +13,7 @@
 
 #include <rtthread.h>
 #include <rtdevice.h>
-
-#ifndef _WIN32
 #include <sys/time.h>
-#endif
 
 #define RT_RTC_YEARS_MAX         137
 #ifdef RT_USING_SOFT_RTC
@@ -98,8 +95,8 @@ static void alarm_wakeup(struct rt_alarm *alarm, struct tm *now)
         {
         case RT_ALARM_ONESHOT:
         {
-            sec_alarm = mktime(&alarm->wktime);
-            sec_now = mktime(now);
+            sec_alarm = timegm(&alarm->wktime);
+            sec_now = timegm(now);
             if (((sec_now - sec_alarm) <= RT_ALARM_DELAY) && (sec_now >= sec_alarm))
             {
                 /* stop alarm */
diff --git a/components/drivers/rtc/soft_rtc.c b/components/drivers/rtc/soft_rtc.c
index 6a04314675..240301f683 100644
--- a/components/drivers/rtc/soft_rtc.c
+++ b/components/drivers/rtc/soft_rtc.c
@@ -8,7 +8,7 @@
  * 2018-01-30     armink       the first version
  */
 
-#include <time.h>
+#include <sys/time.h>
 #include <string.h>
 #include <rtthread.h>
 #include <rtdevice.h>
@@ -126,7 +126,7 @@ int rt_soft_rtc_init(void)
 #endif
 
     init_tick = rt_tick_get();
-    init_time = mktime(&time_new);
+    init_time = timegm(&time_new);
 
     soft_rtc_dev.type    = RT_Device_Class_RTC;
 
diff --git a/libcpu/arm/s3c24x0/rtc.c b/libcpu/arm/s3c24x0/rtc.c
index d0c80bce6b..73de840b37 100644
--- a/libcpu/arm/s3c24x0/rtc.c
+++ b/libcpu/arm/s3c24x0/rtc.c
@@ -12,7 +12,7 @@
  */
 
 #include <rtthread.h>
-#include <time.h>
+#include <sys/time.h>
 #include <s3c24x0.h>
 
 // #define RTC_DEBUG
@@ -125,27 +125,27 @@ static rt_size_t rtc_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t
 
 static rt_err_t rtc_control(rt_device_t dev, int cmd, void *args)
 {
-	struct tm tm, *tm_ptr;
+    struct tm tm, *tm_ptr;
     time_t *time;
-	RT_ASSERT(dev != RT_NULL);
+    RT_ASSERT(dev != RT_NULL);
 
-	time = (time_t *)args;
-	switch (cmd)
-	{
-	case RT_DEVICE_CTRL_RTC_GET_TIME:
-		/* read device */
-		rt_hw_rtc_get(&tm);
-		*((rt_time_t *)args) = mktime(&tm);
-		break;
+    time = (time_t *)args;
+    switch (cmd)
+    {
+        case RT_DEVICE_CTRL_RTC_GET_TIME:
+            /* read device */
+            rt_hw_rtc_get(&tm);
+            *((rt_time_t *)args) = timegm(&tm);
+            break;
 
-	case RT_DEVICE_CTRL_RTC_SET_TIME:
-		tm_ptr = localtime(time);
-		/* write device */
-		rt_hw_rtc_set(tm_ptr);
-		break;
-	}
+        case RT_DEVICE_CTRL_RTC_SET_TIME:
+            /* write device */
+            tm_ptr = gmtime(time);
+            rt_hw_rtc_set(tm_ptr);
+            break;
+    }
 
-	return RT_EOK;
+    return RT_EOK;
 }
 
 void rt_hw_rtc_init(void)