"Mon, 05 Jan 1970 12:32:45"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700105
Only TIME
12:32:45
General datetime
1970-01-05 12:32:45Z
For Database
1970-01-05 12:32:45
For HTTP1.1
Mon, 05 Jan 1970 12:32:45 GMT