"Sat, 07 Feb 1970 00:53:03"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700207
Only TIME
00:53:03
General datetime
1970-02-07 00:53:03Z
For Database
1970-02-07 00:53:03
For HTTP1.1
Sat, 07 Feb 1970 00:53:03 GMT