"Wed, 14 Jan 1970 20:43:05"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700114
Only TIME
20:43:05
General datetime
1970-01-14 20:43:05Z
For Database
1970-01-14 20:43:05
For HTTP1.1
Wed, 14 Jan 1970 20:43:05 GMT