"Mon, 23 Feb 1970 12:02:58"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700223
Only TIME
12:02:58
General datetime
1970-02-23 12:02:58Z
For Database
1970-02-23 12:02:58
For HTTP1.1
Mon, 23 Feb 1970 12:02:58 GMT