"Thu, 29 Jan 1970 23:30:47"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700129
Only TIME
23:30:47
General datetime
1970-01-29 23:30:47Z
For Database
1970-01-29 23:30:47
For HTTP1.1
Thu, 29 Jan 1970 23:30:47 GMT