"Wed, 18 Jun 2025 14:45:03"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250618
Only TIME
14:45:03
General datetime
2025-06-18 14:45:03Z
For Database
2025-06-18 14:45:03
For HTTP1.1
Wed, 18 Jun 2025 14:45:03 GMT