"Mon, 23 Jun 2025 19:05:40"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250623
Only TIME
19:05:40
General datetime
2025-06-23 19:05:40Z
For Database
2025-06-23 19:05:40
For HTTP1.1
Mon, 23 Jun 2025 19:05:40 GMT