"Sun, 22 Jun 2025 19:05:18"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250622
Only TIME
19:05:18
General datetime
2025-06-22 19:05:18Z
For Database
2025-06-22 19:05:18
For HTTP1.1
Sun, 22 Jun 2025 19:05:18 GMT