"Tue, 06 Jan 1970 07:37:27"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700106
Only TIME
07:37:27
General datetime
1970-01-06 07:37:27Z
For Database
1970-01-06 07:37:27
For HTTP1.1
Tue, 06 Jan 1970 07:37:27 GMT