"Sun, 11 Jan 1970 15:12:58"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700111
Only TIME
15:12:58
General datetime
1970-01-11 15:12:58Z
For Database
1970-01-11 15:12:58
For HTTP1.1
Sun, 11 Jan 1970 15:12:58 GMT