Find out when a Google Calendar event was created - right in the pop-up
Add to Chrome - freeYou know the one. It just suddenly appeared in your calendar, you don't know when it was made, and now it's Everyone's Problem.
Google Calendar knows when it was made - it just doesn't tell you!
What you see when you click an event
Open any event in Google Calendar.
Since When?! fetches the details in the background.
Whomst and Whenst - right in the popup.
Privacy: Since When?! reads your Google Calendar data to display creator info. Nothing is stored, sent to third parties, or logged by us. The extension only talks to Google's servers, using your existing Google account.
Free for personal Gmail accounts. Google Workspace accounts (work or custom domains) get a 30-day free trial, then a one-time $5 upgrade to keep using it.
The extension signs in as one Google account at a time. If you need to check events from a different account, sign out and back in with that one via the popup. One payment covers all accounts on the same browser profile.
It reads your Google Calendar to look up event details, and your Google account email to identify you. Nothing is stored, shared, or sent anywhere. It only ever talks to Google's own servers.
Google Calendar doesn't tell you if you were added to an event after it was first created. That's why we show the last modified time โ if it's much later than the created date, the event was updated, possibly to add you. Use the 'Find invite โ' link to search your Gmail for the original invitation.
Free forever for personal Gmail. Google Workspace accounts get a 30-day trial, then a one-time $5 upgrade.
Add to Chrome โ