| Values for Old Faithful Area | 1977-05-06 |
|---|---|
| Astronomical Twilight Begin | 04:06 |
| Nautical Twilight Begin | 04:52 |
| Civil Twilight Begin | 05:33 |
| Sunrise | 06:06 |
| Sunset | 20:33 |
| Civil Twilight End | 21:06 |
| Nautical Twilight End | 21:46 |
| Astronomical Twilight End | 22:32 |
| Moon Illumination | 89.17% |