"Mon, 05 Jan 1970 02:28:45"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700105
Only TIME
02:28:45
General datetime
1970-01-05 02:28:45Z
For Database
1970-01-05 02:28:45
For HTTP1.1
Mon, 05 Jan 1970 02:28:45 GMT