"Sat, 28 Jun 2025 14:44:58"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250628
Only TIME
14:44:58
General datetime
2025-06-28 14:44:58Z
For Database
2025-06-28 14:44:58
For HTTP1.1
Sat, 28 Jun 2025 14:44:58 GMT