"Sat, 18 Jan 2025 19:25:52"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250118
Only TIME
19:25:52
General datetime
2025-01-18 19:25:52Z
For Database
2025-01-18 19:25:52
For HTTP1.1
Sat, 18 Jan 2025 19:25:52 GMT