"Wed, 28 Jan 1970 07:52:47"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700128
Only TIME
07:52:47
General datetime
1970-01-28 07:52:47Z
For Database
1970-01-28 07:52:47
For HTTP1.1
Wed, 28 Jan 1970 07:52:47 GMT