"Sat, 21 Dec 2024 18:37:25"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241221
Only TIME
18:37:25
General datetime
2024-12-21 18:37:25Z
For Database
2024-12-21 18:37:25
For HTTP1.1
Sat, 21 Dec 2024 18:37:25 GMT