"Sun, 11 Jan 1970 00:55:59"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700111
Only TIME
00:55:59
General datetime
1970-01-11 00:55:59Z
For Database
1970-01-11 00:55:59
For HTTP1.1
Sun, 11 Jan 1970 00:55:59 GMT