Compare calculators
Both calculators run independently โ change the inputs on either side to compare results.
Astronomy
Lunar Phase Calculator
Calculate the Moon's current phase and illumination percentage for any calendar date. Useful for photographers, gardeners, and astronomers planning around the lunar cycle.
Fill in the required fields to see your result.
Astronomy
Galactic Year Calculator
Calculate how long it takes a star or object to complete one full orbit around the galactic center, given its orbital radius and velocity. Ideal for visualising cosmic timescales in astrophysics and astronomy coursework.
Fill in the required fields to see your result.
Key differences
| Lunar Phase Calculator | Galactic Year Calculator | |
|---|---|---|
| Category | Astronomy | Astronomy |
| Inputs required | 3 | 2 |
| Result | Moon Illumination (%) | Galactic Year (million years) |
| What it does | Calculate the Moon's current phase and illumination percentage for any calendar date. Useful for photographers, gardeners, and astronomers planning around the lunar cycle. | Calculate how long it takes a star or object to complete one full orbit around the galactic center, given its orbital radius and velocity. Ideal for visualising cosmic timescales in astrophysics and astronomy coursework. |