"Sun, 23 Feb 2025 20:38:02"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250223
Only TIME
20:38:02
General datetime
2025-02-23 20:38:02Z
For Database
2025-02-23 20:38:02
For HTTP1.1
Sun, 23 Feb 2025 20:38:02 GMT