"Thu, 01 Jan 1970 11:45:23"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700101
Only TIME
11:45:23
General datetime
1970-01-01 11:45:23Z
For Database
1970-01-01 11:45:23
For HTTP1.1
Thu, 01 Jan 1970 11:45:23 GMT