"Tue, 03 Feb 1970 12:53:49"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700203
Only TIME
12:53:49
General datetime
1970-02-03 12:53:49Z
For Database
1970-02-03 12:53:49
For HTTP1.1
Tue, 03 Feb 1970 12:53:49 GMT