"Fri, 23 Jan 1970 12:34:53"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700123
Only TIME
12:34:53
General datetime
1970-01-23 12:34:53Z
For Database
1970-01-23 12:34:53
For HTTP1.1
Fri, 23 Jan 1970 12:34:53 GMT