"Sun, 04 Jan 1970 22:05:16"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700104
Only TIME
22:05:16
General datetime
1970-01-04 22:05:16Z
For Database
1970-01-04 22:05:16
For HTTP1.1
Sun, 04 Jan 1970 22:05:16 GMT