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The ACS PC Atlas for Windows

ACS American AtlasACS International Atlas

The ACS PC American and International Atlas for Windows includes longitudes and latitudes for over 152,000 locations and the clock-setting history of virtually every incorporated or unincorporated city, town, neighborhood, airport, or military base in the U.S.

In addition, there are longitudes, latitudes, time zones and time changes for over 100,000 places in the world outside the U.S.  There is a unique and useful radius search and a hospital database for large U.S. cities.

Please note: We no longer sell the standalone ACS American and International PC Atlas for use in software programs as it is now built-in.

Attention Software and Website Developers: For more information on purchasing the ACS Atlas for use in development write to

The Full ACS PC Atlas, if you don't already own it, comes free with the purchase of an Astrolabe Report System product.