"Sat, 18 Jan 2025 15:27:13"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250118
Only TIME
15:27:13
General datetime
2025-01-18 15:27:13Z
For Database
2025-01-18 15:27:13
For HTTP1.1
Sat, 18 Jan 2025 15:27:13 GMT