"Tue, 05 May 1970 07:12:42"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700505
Only TIME
07:12:42
General datetime
1970-05-05 07:12:42Z
For Database
1970-05-05 07:12:42
For HTTP1.1
Tue, 05 May 1970 07:12:42 GMT