"Mon, 19 Jan 1970 14:46:10"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700119
Only TIME
14:46:10
General datetime
1970-01-19 14:46:10Z
For Database
1970-01-19 14:46:10
For HTTP1.1
Mon, 19 Jan 1970 14:46:10 GMT