"Fri, 02 Jan 1970 15:12:29"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700102
Only TIME
15:12:29
General datetime
1970-01-02 15:12:29Z
For Database
1970-01-02 15:12:29
For HTTP1.1
Fri, 02 Jan 1970 15:12:29 GMT