diff --git a/main.c b/main.c
index 2dd520c..c8ce75a 100644
--- a/main.c
+++ b/main.c
@@ -487,7 +487,7 @@ void main(void)
 			ticks_time = rtc_get_counter_val(); // copy time from internal RTC for processing
 			action = true; // action has been performed
 			if ((ticks_time%(60))==0) { // one minute passed
-				printf("uptime: %02lu:%02lu:%02lu\n", ticks_time/(60*60), (ticks_time%(60*60))/60, (ticks_time%60)); // display external time
+				printf("uptime: %lu.%02lu:%02lu:%02lu\n", ticks_time/(60*60*24), (ticks_time/(60*60))%24, (ticks_time%(60*60))/60, (ticks_time%60)); // display external time
 			}
 		}
 		while (pzem_meter>=LENGTH(pzem_measurements) && sdm120_meter>=LENGTH(sdm120_measurements)) { // all measurements received for all meter
@@ -603,7 +603,7 @@ void main(void)
 		while (timer_get_flag(TIM(MAIN_TIMER), TIM_SR_UIF)) { // timer update event -> query measurements
 			timer_clear_flag(TIM(MAIN_TIMER), TIM_SR_UIF); // clear flag
 			action = true; // action has been performed
-			printf("query meter measurements (%02lu:%02lu:%02lu)\n", ticks_time/(60*60), (ticks_time%(60*60))/60, (ticks_time%60));
+			printf("query meter measurements (%lu.%02lu:%02lu:%02lu)\n", ticks_time/(60*60*24), (ticks_time/(60*60))%24, (ticks_time%(60*60))/60, (ticks_time%60));
 			// start getting all PZEM-004T measurements from all meters
 			pzem_meter = 0; // reset PZEM meter number
 			pzem_measurement = 0; // reset PZEM measurement index