"Sat, 24 Jan 1970 20:37:53"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700124
Only TIME
20:37:53
General datetime
1970-01-24 20:37:53Z
For Database
1970-01-24 20:37:53
For HTTP1.1
Sat, 24 Jan 1970 20:37:53 GMT