"Fri, 02 Jan 1970 17:11:11"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700102
Only TIME
17:11:11
General datetime
1970-01-02 17:11:11Z
For Database
1970-01-02 17:11:11
For HTTP1.1
Fri, 02 Jan 1970 17:11:11 GMT