"Sun, 11 Jan 1970 02:47:07"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700111
Only TIME
02:47:07
General datetime
1970-01-11 02:47:07Z
For Database
1970-01-11 02:47:07
For HTTP1.1
Sun, 11 Jan 1970 02:47:07 GMT