"Wed, 07 Jan 1970 03:44:51"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700107
Only TIME
03:44:51
General datetime
1970-01-07 03:44:51Z
For Database
1970-01-07 03:44:51
For HTTP1.1
Wed, 07 Jan 1970 03:44:51 GMT