"Sat, 25 Jan 2025 19:21:00"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250125
Only TIME
19:21:00
General datetime
2025-01-25 19:21:00Z
For Database
2025-01-25 19:21:00
For HTTP1.1
Sat, 25 Jan 2025 19:21:00 GMT