"Wed, 14 Jan 1970 01:01:00"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700114
Only TIME
01:01:00
General datetime
1970-01-14 01:01:00Z
For Database
1970-01-14 01:01:00
For HTTP1.1
Wed, 14 Jan 1970 01:01:00 GMT