"Sat, 10 Jan 1970 11:31:57"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700110
Only TIME
11:31:57
General datetime
1970-01-10 11:31:57Z
For Database
1970-01-10 11:31:57
For HTTP1.1
Sat, 10 Jan 1970 11:31:57 GMT