"Mon, 26 Jan 1970 21:48:10"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700126
Only TIME
21:48:10
General datetime
1970-01-26 21:48:10Z
For Database
1970-01-26 21:48:10
For HTTP1.1
Mon, 26 Jan 1970 21:48:10 GMT