Converting an epoch timestamp with the right zone

First identify whether the epoch value is in seconds or milliseconds. Convert it to UTC, then display the local time using a named time zone for the event date.

Include both the full date and time; a zone conversion can cross midnight. Verify against a known event if the result looks implausible. Around daylight-saving transitions, a named zone is safer than assuming today's fixed UTC offset.

What value and time zone are you using?