"Sun, 22 Dec 2024 15:35:36"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20241222
Only TIME
15:35:36
General datetime
2024-12-22 15:35:36Z
For Database
2024-12-22 15:35:36
For HTTP1.1
Sun, 22 Dec 2024 15:35:36 GMT