"Sat, 21 Dec 2024 10:55:17"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241221
Only TIME
10:55:17
General datetime
2024-12-21 10:55:17Z
For Database
2024-12-21 10:55:17
For HTTP1.1
Sat, 21 Dec 2024 10:55:17 GMT