"Wed, 28 Jan 1970 02:47:08"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700128
Only TIME
02:47:08
General datetime
1970-01-28 02:47:08Z
For Database
1970-01-28 02:47:08
For HTTP1.1
Wed, 28 Jan 1970 02:47:08 GMT