"Mon, 26 Jan 1970 15:12:54"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700126
Only TIME
15:12:54
General datetime
1970-01-26 15:12:54Z
For Database
1970-01-26 15:12:54
For HTTP1.1
Mon, 26 Jan 1970 15:12:54 GMT