Astronomy & Space Tools

New

Enter a city name or coordinates and see today's sunrise, sunset, and twilight times. Approximate algorithm. Local.

Astronomy calculator location sunrise sunset

New

Enter a location and date to find the exact time of solar noon, sunrise, and sunset. Astronomy tool.

Astronomy calculator noon solar sun

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Calculate the age of the moon in days since the last new moon. See illumination percentage. Simple algorithm.

Astronomy age calculator lunar moon

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View the moon phase for any date in past or future. See full moon dates and eclipses for a given year.

Astronomy calendar moon phase predictor

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Select telescope and eyepiece parameters to see the field of view circle on a simulated night sky image.

Astronomy eyepiece FOV simulator telescope