"Mon, 05 Jan 1970 01:19:38"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700105
Only TIME
01:19:38
General datetime
1970-01-05 01:19:38Z
For Database
1970-01-05 01:19:38
For HTTP1.1
Mon, 05 Jan 1970 01:19:38 GMT