"Wed, 07 Jan 1970 15:06:51"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700107
Only TIME
15:06:51
General datetime
1970-01-07 15:06:51Z
For Database
1970-01-07 15:06:51
For HTTP1.1
Wed, 07 Jan 1970 15:06:51 GMT