"Fri, 02 Jan 1970 07:40:22"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700102
Only TIME
07:40:22
General datetime
1970-01-02 07:40:22Z
For Database
1970-01-02 07:40:22
For HTTP1.1
Fri, 02 Jan 1970 07:40:22 GMT