"Thu, 19 Mar 1970 00:52:53"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700319
Only TIME
00:52:53
General datetime
1970-03-19 00:52:53Z
For Database
1970-03-19 00:52:53
For HTTP1.1
Thu, 19 Mar 1970 00:52:53 GMT