"Thu, 29 Jan 1970 21:42:05"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700129
Only TIME
21:42:05
General datetime
1970-01-29 21:42:05Z
For Database
1970-01-29 21:42:05
For HTTP1.1
Thu, 29 Jan 1970 21:42:05 GMT