"Sun, 23 Feb 2025 21:11:56"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250223
Only TIME
21:11:56
General datetime
2025-02-23 21:11:56Z
For Database
2025-02-23 21:11:56
For HTTP1.1
Sun, 23 Feb 2025 21:11:56 GMT