"Sun, 11 Jan 1970 22:40:25"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700111
Only TIME
22:40:25
General datetime
1970-01-11 22:40:25Z
For Database
1970-01-11 22:40:25
For HTTP1.1
Sun, 11 Jan 1970 22:40:25 GMT