"Thu, 22 Jan 1970 04:35:39"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700122
Only TIME
04:35:39
General datetime
1970-01-22 04:35:39Z
For Database
1970-01-22 04:35:39
For HTTP1.1
Thu, 22 Jan 1970 04:35:39 GMT