"Sun, 04 Jan 1970 17:11:00"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700104
Only TIME
17:11:00
General datetime
1970-01-04 17:11:00Z
For Database
1970-01-04 17:11:00
For HTTP1.1
Sun, 04 Jan 1970 17:11:00 GMT