"Sun, 22 Dec 2024 18:45:23"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241222
Only TIME
18:45:23
General datetime
2024-12-22 18:45:23Z
For Database
2024-12-22 18:45:23
For HTTP1.1
Sun, 22 Dec 2024 18:45:23 GMT