Three Day Observing Forecast
The "Clear Sky Clock" is a handy new standard for predicting local weather for astronomical observing in far more detail than conventional weather forecasts.
Peterborough’s Clear Sky Clock provides information on current and future cloud cover, but also looks at the clarity and stability of the sky. It also takes into consideration when the moon will be out and what phase it is in.
Copyright © 2006 – 2026 Peterborough Astronomical Association
Current Lunar Phase

Last Quarter
Peterborough, Ontario, Canada
Calculated locally by Celestial Web Development for 2026-11-02. Times use America/New_York. Dawn/Dusk are astronomical twilight. Results may vary from other services due to calculation and horizon assumptions.
