"Wed, 07 Jan 1970 11:04:34"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700107
Only TIME
11:04:34
General datetime
1970-01-07 11:04:34Z
For Database
1970-01-07 11:04:34
For HTTP1.1
Wed, 07 Jan 1970 11:04:34 GMT