"Wed, 18 Mar 1970 12:03:10"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700318
Only TIME
12:03:10
General datetime
1970-03-18 12:03:10Z
For Database
1970-03-18 12:03:10
For HTTP1.1
Wed, 18 Mar 1970 12:03:10 GMT