rem: + sRealTimeData->timezone_offset) / 1000000;
add: - (sRealTimeData->isGMT ? 0 : sRealTimeData->timezone_offset)) / 1000000;
context: real_time_clock(void){	return (sRealTimeData->boot_time + system_time()		+ sRealTimeData->timezone_offset) / 1000000;}