"Sat, 21 Dec 2024 16:12:19"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241221
Only TIME
16:12:19
General datetime
2024-12-21 16:12:19Z
For Database
2024-12-21 16:12:19
For HTTP1.1
Sat, 21 Dec 2024 16:12:19 GMT