"Wed, 28 Jan 1970 21:46:25"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700128
Only TIME
21:46:25
General datetime
1970-01-28 21:46:25Z
For Database
1970-01-28 21:46:25
For HTTP1.1
Wed, 28 Jan 1970 21:46:25 GMT