"Wed, 07 Jan 1970 01:00:51"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700107
Only TIME
01:00:51
General datetime
1970-01-07 01:00:51Z
For Database
1970-01-07 01:00:51
For HTTP1.1
Wed, 07 Jan 1970 01:00:51 GMT