diff --git a/src/main.cpp b/src/main.cpp
index 2dba1a5..0b14cad 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -46,6 +46,8 @@ static float g_last_temperature = -127.0f;
 static unsigned long g_last_hall_alert = 0;
 static unsigned long g_last_motion_alert = 0;
 static const unsigned long ALERT_COOLDOWN_MS = 600000;
+static const uint32_t TZ_OFFSET = 10800; // +3h (MSK)
+
 static uint32_t date_to_epoch(int y, int m, int d, int h, int mi) {
     const uint8_t mdays[] = {31,28,31,30,31,30,31,31,30,31,30,31};
     uint32_t days = (y - 1970) * 365;
@@ -227,7 +229,7 @@ public:
         } else if (strncmp(cmd, "time", 4) == 0) {
             const char* rest = cmd + 4; while (*rest == ' ') rest++;
             if (*rest == 0) {
-                uint32_t ts = rtc_clock.getCurrentTime();
+                uint32_t ts = rtc_clock.getCurrentTime() + TZ_OFFSET;
                 if (ts < 100000) { defer_response("time not set"); return; }
                 uint32_t days = ts / 86400;
                 int h = (ts % 86400) / 3600;
@@ -258,7 +260,7 @@ public:
                 if (y < 2020 || y > 2099 || m < 1 || m > 12 || d < 1 || d > 31 || h > 23 || mi > 59) {
                     defer_response("bad date"); return;
                 }
-                rtc_clock.setCurrentTime(date_to_epoch(y, m, d, h, mi));
+                rtc_clock.setCurrentTime(date_to_epoch(y, m, d, h, mi) - TZ_OFFSET);
                 char r[64]; snprintf(r, sizeof(r), "time set %02d.%02d.%04d %02d.%02d", d, m, y, h, mi);
                 defer_response(r);
             } else defer_response("time s DD.MM.YYYY HH.MM");