A "year" is simply the time a planet takes to complete one orbit around its star. Enter your birthday to discover how many planetary anniversaries you have celebrated across the solar system.
Because gravity weakens with distance from the Sun ($F = G \frac{M m}{r^2}$), inner planets move significantly faster and have shorter orbital perimeters than outer worlds.
| World | Orbital Period (Earth Days) | Orbital Period (Earth Years) | Average Orbital Speed |
|---|---|---|---|
| ☿️ Mercury | 87.97 days | 0.24 years | 47.36 km/s |
| ♀️ Venus | 224.70 days | 0.62 years | 35.02 km/s |
| 🌍 Earth | 365.26 days | 1.00 year | 29.78 km/s |
| ♂️ Mars | 686.98 days | 1.88 years | 24.07 km/s |
| ♃ Jupiter | 4,332.59 days | 11.86 years | 13.07 km/s |
| ♄ Saturn | 10,759.22 days | 29.46 years | 9.69 km/s |
| ♅ Uranus | 30,685.40 days | 84.01 years | 6.81 km/s |
| ♆ Neptune | 60,189.00 days | 164.79 years | 5.43 km/s |
| ⯓ Pluto | 90,560.00 days | 247.94 years | 4.74 km/s |