| Values for Old Faithful Area | 1977-05-08 |
|---|---|
| Astronomical Twilight Begin | 04:02 |
| Nautical Twilight Begin | 04:49 |
| Civil Twilight Begin | 05:30 |
| Sunrise | 06:03 |
| Sunset | 20:35 |
| Civil Twilight End | 21:08 |
| Nautical Twilight End | 21:49 |
| Astronomical Twilight End | 22:36 |
| Moon Illumination | 70.78% |