"Wed, 28 Jan 1970 12:33:39"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700128
Only TIME
12:33:39
General datetime
1970-01-28 12:33:39Z
For Database
1970-01-28 12:33:39
For HTTP1.1
Wed, 28 Jan 1970 12:33:39 GMT