"Wed, 14 Jan 1970 05:56:51"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700114
Only TIME
05:56:51
General datetime
1970-01-14 05:56:51Z
For Database
1970-01-14 05:56:51
For HTTP1.1
Wed, 14 Jan 1970 05:56:51 GMT