"Thu, 29 Jan 1970 07:47:27"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
19700129
Only TIME
07:47:27
General datetime
1970-01-29 07:47:27Z
For Database
1970-01-29 07:47:27
For HTTP1.1
Thu, 29 Jan 1970 07:47:27 GMT