Contact
There is no contact form here, because a form needs a server and this site does not have one. Email works.
General
Corrections
If a time, offset or transition date on this site is wrong, that is the most useful thing you can tell us. Include the page URL and what you expected — the underlying data comes from the IANA time zone database, so a disagreement usually means either a stale build or a genuine bug in how it is being read, and both are worth fixing quickly.
Security
Report vulnerabilities to support@yourworldtime.com. Machine-readable details are at /.well-known/security.txt.