Maps & Calculators

Eclipse Maps

Here you'll find some of the best eclipse maps available, as judged by members of the AAS Solar Eclipse Task Force. To avoid overwhelming you with too much information, we've intentionally weighted our listings toward resources that are relatively new, up to date, and/or especially relevant to the August 21, 2017, solar eclipse across America. We've also considered quality, of course; if a map or source of maps is listed here, we think it's of high quality. If it's not listed here, that doesn't mean it's not of high quality — it just means we can't list everything. If you have, or know of, a resource that you think belongs here, please contact us; we can't guarantee that we'll add the item to our website, but we will consider it.

Maps by Fred Espenak, known worldwide as "Mr. Eclipse." Now retired from NASA's Goddard Space Flight Center, Fred is longtime author of the NASA Eclipse Bulletin and the world's leading expert in the science of eclipse prediction.

Google Map by NASA, originally developed by Fred Espenak (see above) and now maintained by others on the NASA Goddard Space Flight Center eclipse team.

Other Maps by NASA, from the Goddard Space Flight Center.

Google Map by the National Solar Observatory (NSO) in Boulder, Colorado; click anywhere on the map to find the circumstances of the eclipse there, in local time, along with a description of what you'll see from that spot.

Maps by Xavier M. Jubier, an information-technology professional, eclipse enthusiast, and creator of the popular Eclipse Maestro software (see Resources > Apps & Software).

Maps by Michael Zeiler, a professional geographer employed by Esri, the leading provider of geographic information systems (GIS) software.

Map by Bill Kramer, a cartoonist whose Eclipse-Chasers.com website collects reports from eclipse enthusiasts worldwide.

Maps by Jay Anderson, now retired from the Meteorological Service of Environment Canada. Jay is the dean of eclipse climatology and weather prediciton and longtime coauthor, with Fred Espenak (see above), of the NASA Eclipse Bulletin.

Maps by Larry Koehn, who for many years has been producing very nice animated eclipse maps and related visuals on his website Shadow & Substance:

Maps by U.S. and State Depts. of Transportation and related agencies, which provide real-time information about traffic, road closures, and road conditions. These resources could prove extremely valuable in the days leading up to the eclipse and on August 21st itself, especially if you're driving into the path of totality:

Eclipse Calculators are utilities that do one (or more) of the following: search for past or future eclipses at any specified location and/or display detailed circumstances for a particular eclipse at any specified location. Some calculators display results in a table, others on a map:

For two other approaches, see the interactive Google eclipse maps listed higher up on this page and the eclipse mobile apps and computer programs listed on our Apps & Software page.