"Wed, 28 Jan 1970 05:32:40"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700128
Only TIME
05:32:40
General datetime
1970-01-28 05:32:40Z
For Database
1970-01-28 05:32:40
For HTTP1.1
Wed, 28 Jan 1970 05:32:40 GMT