Calendar and Regions
Check with the organizing group; some events may be changed
Use the down arrow button to hide some of the regions and see only events in your region.
AC = Astronomy Club
AS = Astronomical Society
Nat. Mon. = National Monument
NP = National Park
Obs. = Observatory
SP = State Park
IDA Colorado regions
red = Western Colorado
gold = Northeastern Colorado
green = Central-Denver Colorado
blue = Southeastern Colorado
brown = IDA Colorado
purple = Holidays
For regional events and contacts
Martie Semmer, Blue River
Richard OBrien, Boulder, email@example.com
Join the International Dark-sky Association
IDA members with a Colorado mailing address are automatically part of the Colorado chapter.
Colorado chapter members get a monthly newsletter and other benefits.