Hi, Python date time experts, summary for getting UTC time in sec: print time.time() print calendar.timegm(time.gmtime()) print time.mktime(time.localtime()) print calendar.timegm(datetime.datetime.utcnow().timetuple()) print time.mktime(datetime.datetime.now().timetuple()) Are all the functions above expected? See code below: ################################################### """Try the time date util for local and gm. Usage: $ date -u +%s && python aa.py 1471980937 * time: time.struct_time(tm_year=2016, tm_mon=8, tm_mday=23, tm_hour=19, tm_min=35, tm_sec=37, tm_wday=1, tm_yday=236, tm_isdst=0) time.gmtime() 1472009737.0 time.mktime 1471980937 calendar.timegm <-- right time.struct_time(tm_year=2016, tm_mon=8, tm_mday=23, tm_hour=12, tm_min=35, tm_sec=37, tm_wday=1, tm_yday=236, tm_isdst=1) time.localtime() 1471980937.0 time.mktime <-- right 1471955737 calendar.timegm * datetime.utcnow(): time.struct_time(tm_year=2016, tm_mon=8, tm_mday=23, tm_hour=19, tm_min=35, tm_sec=37, tm_wday=1, tm_yday=236, tm_isdst=-1) datetime.utcnow() 1472006137.0 time.mktime 1471980937 calendar.timegm <-- right time.struct_time(tm_year=2016, tm_mon=8, tm_mday=23, tm_hour=12, tm_min=35, tm_sec=37, tm_wday=1, tm_yday=236, tm_isdst=-1) datetime.now() 1471980937.0 time.mktime <-- right 1471955737 calendar.timegm * summary for getting UTC time in sec: 1471980937.24 1471980937 1471980937.0 1471980937 1471980937.0 """ import calendar import datetime import time def to_timestamp(dt): return calendar.timegm(dt.timetuple()) def to_timestamp2(dt): return time.mktime(dt.timetuple()) print '\n* time:' gmt = time.gmtime() localt = time.localtime() utc_now = datetime.datetime.utcnow() local_now = datetime.datetime.now() print gmt, '\t time.gmtime()' print time.mktime(gmt), '\t time.mktime' print calendar.timegm(gmt), '\t calendar.timegm <-- right' print localt, '\t time.localtime()' print time.mktime(localt), '\t time.mktime <-- right' print calendar.timegm(localt), '\t calendar.timegm' print '\n* datetime.utcnow():' print utc_now.timetuple(), '\t datetime.utcnow()' print to_timestamp2(utc_now), '\t time.mktime' print to_timestamp(utc_now), '\t calendar.timegm <-- right' print local_now.timetuple(), '\t datetime.now()' print to_timestamp2(local_now), '\t time.mktime <-- right' print to_timestamp(local_now), '\t calendar.timegm' print '\n* summary for getting UTC time in sec:' print time.time() print calendar.timegm(time.gmtime()) print time.mktime(time.localtime()) print calendar.timegm(datetime.datetime.utcnow().timetuple()) print time.mktime(datetime.datetime.now().timetuple()) ################################################### -- Lenjoy