"Fri, 20 Jun 2025 19:05:37"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250620
Only TIME
19:05:37
General datetime
2025-06-20 19:05:37Z
For Database
2025-06-20 19:05:37
For HTTP1.1
Fri, 20 Jun 2025 19:05:37 GMT