Checking the sky…
Cloud cover and daylight timing will appear here.
Backyard astronomy
Skywatch
Sunset, moon phase, cloud cover, meteor-shower timing, and next-launch viewing cues for whatever location you choose.
Skywatch near Washington, DC
Tonight planner
Building tonight’s timeline…
Hourly cloud cover and visibility will appear here.
- Waiting Sky check Loading…
Sunset calculating
Moon calculating
ISS checking passes
Launch checking schedule
Sunrise / sunset
Loading solar times…
Moon phase
Calculating moon phase…
Next peak
Checking the annual shower calendar…
Checking orbit…
Looking for the next station pass over this location.
Checking constellation…
Counting tracked satellites and the closest one above the horizon.
Next US launch
Checking the cached launch schedule…
Open launch scheduleLocation is requested only when you choose it. Weather and geocoding data come from Open-Meteo; satellite orbital data is cached by the private server from CelesTrak; moon and meteor timing are calculated locally.