"Tue, 06 Jan 1970 07:38:41"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700106
Only TIME
07:38:41
General datetime
1970-01-06 07:38:41Z
For Database
1970-01-06 07:38:41
For HTTP1.1
Tue, 06 Jan 1970 07:38:41 GMT