Slack Timestamp Generator

Slack dynamic dates store an absolute moment as a Unix timestamp (in seconds) plus a token string that describes the format. When a message renders, Slack converts that moment into each reader's own timezone and locale automatically, so nobody has to do the math.

No. The Slack message box treats <!date^…> as ordinary text, so it only renders in messages sent by an app, a bot, an incoming webhook or the Web API (for example chat.postMessage or a Block Kit mrkdwn field). Build the code here, then use it in whatever sends your message.

It is Slack's special formatting syntax: <!date^UNIX^TOKENSTRING|FALLBACK>. UNIX is the epoch time in seconds, TOKENSTRING mixes tokens like {date_short} and {time} with any literal text, and FALLBACK is plain text shown to clients that cannot render the date. You can add an optional link with <!date^UNIX^TOKENSTRING^https://link|FALLBACK>.

Because the timestamp is an absolute point in time, not a fixed wall-clock string. Slack renders it in each member's configured timezone, so a message set for 6:39 AM New York time shows as 11:39 AM for a teammate in London: the same moment, localized for each reader.

Yes. This Slack timestamp generator is completely free with no login or account required, and everything runs entirely in your browser.