"Mon, 19 Jan 1970 23:32:17"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700119
Only TIME
23:32:17
General datetime
1970-01-19 23:32:17Z
For Database
1970-01-19 23:32:17
For HTTP1.1
Mon, 19 Jan 1970 23:32:17 GMT