"Thu, 22 Jan 1970 11:04:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700122
Only TIME
11:04:21
General datetime
1970-01-22 11:04:21Z
For Database
1970-01-22 11:04:21
For HTTP1.1
Thu, 22 Jan 1970 11:04:21 GMT