"Fri, 27 Jun 2025 19:05:39"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250627
Only TIME
19:05:39
General datetime
2025-06-27 19:05:39Z
For Database
2025-06-27 19:05:39
For HTTP1.1
Fri, 27 Jun 2025 19:05:39 GMT