"Thu, 22 Jan 1970 12:34:51"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700122
Only TIME
12:34:51
General datetime
1970-01-22 12:34:51Z
For Database
1970-01-22 12:34:51
For HTTP1.1
Thu, 22 Jan 1970 12:34:51 GMT