"Sat, 21 Dec 2024 13:18:07"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241221
Only TIME
13:18:07
General datetime
2024-12-21 13:18:07Z
For Database
2024-12-21 13:18:07
For HTTP1.1
Sat, 21 Dec 2024 13:18:07 GMT