"Tue, 06 Jan 1970 03:42:19"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700106
Only TIME
03:42:19
General datetime
1970-01-06 03:42:19Z
For Database
1970-01-06 03:42:19
For HTTP1.1
Tue, 06 Jan 1970 03:42:19 GMT