"Sat, 21 Dec 2024 11:19:13"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241221
Only TIME
11:19:13
General datetime
2024-12-21 11:19:13Z
For Database
2024-12-21 11:19:13
For HTTP1.1
Sat, 21 Dec 2024 11:19:13 GMT