"Sun, 11 Jan 1970 19:46:04"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700111
Only TIME
19:46:04
General datetime
1970-01-11 19:46:04Z
For Database
1970-01-11 19:46:04
For HTTP1.1
Sun, 11 Jan 1970 19:46:04 GMT