"Sun, 22 Jun 2025 19:05:23"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250622
Only TIME
19:05:23
General datetime
2025-06-22 19:05:23Z
For Database
2025-06-22 19:05:23
For HTTP1.1
Sun, 22 Jun 2025 19:05:23 GMT