"Sun, 01 Feb 1970 03:26:23"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700201
Only TIME
03:26:23
General datetime
1970-02-01 03:26:23Z
For Database
1970-02-01 03:26:23
For HTTP1.1
Sun, 01 Feb 1970 03:26:23 GMT