"Thu, 19 Jun 2025 19:05:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250619
Only TIME
19:05:21
General datetime
2025-06-19 19:05:21Z
For Database
2025-06-19 19:05:21
For HTTP1.1
Thu, 19 Jun 2025 19:05:21 GMT