"Sat, 18 Jan 2025 12:15:03"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250118
Only TIME
12:15:03
General datetime
2025-01-18 12:15:03Z
For Database
2025-01-18 12:15:03
For HTTP1.1
Sat, 18 Jan 2025 12:15:03 GMT