"Fri, 13 Mar 1970 00:53:40"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700313
Only TIME
00:53:40
General datetime
1970-03-13 00:53:40Z
For Database
1970-03-13 00:53:40
For HTTP1.1
Fri, 13 Mar 1970 00:53:40 GMT