About 2027 Eclipse Map

Interactive map of the total solar eclipse of 2 August 2027. Search or tap any place to see whether it gets totality or a partial eclipse, the exact local times, and how long totality lasts.

2027 Eclipse Map is a free, single-purpose website. It is built to be useful on its own: you can explore the map, share a link to exactly what you are looking at, embed it on your own page or download an image of it. Everything is made from open data, and the credits are on the data sources page.

Who runs it

This site is run by Chris Barnes, a sole trader (England and Wales). It is one of a small family of map sites; you can find the others in the "More maps" list at the bottom of every page.

How accurate is it?

We show the data as its authors published it, and we try to be honest about how certain it is. Where something is a best guess, the map says so. If you spot a mistake in how we display or describe the data, please tell us.

How it is paid for

The site is free to use. It may show adverts, and it offers an optional email newsletter. We do not sell your personal data.

Why this site exists

I built this map because the eclipse of 2 August 2027 is going to be a very big event, and I wanted an easy way to see what it looks like from any town, in a few seconds, on a phone. It is a small independent project, not an official source. If a time here ever disagrees with an official one, trust the official one and please tell us so we can look into it. There is a Spanish version of the map at /es, written without a native-speaker review so far.

How the numbers are made

Every time and duration on this site is calculated, not copied. We take the Besselian elements for the eclipse published by Fred Espenak (EclipseWise and NASA) and run the standard local-circumstances method for each place, in your browser for the map and at build time for the city pages. The calculation is checked automatically against the published EclipseWise city tables and NASA's central-line table, and agrees to within about a second.

We use a Delta T of 69.2 seconds, the value measured recently, so our times can be a few seconds later than the published tables. Predictions treat the Moon as smooth, so they ignore mountains and valleys on its edge. The data sources page has the full credits.