"Tue, 06 Jan 1970 00:56:27"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700106
Only TIME
00:56:27
General datetime
1970-01-06 00:56:27Z
For Database
1970-01-06 00:56:27
For HTTP1.1
Tue, 06 Jan 1970 00:56:27 GMT