"Wed, 21 Jan 1970 11:05:51"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700121
Only TIME
11:05:51
General datetime
1970-01-21 11:05:51Z
For Database
1970-01-21 11:05:51
For HTTP1.1
Wed, 21 Jan 1970 11:05:51 GMT