| Values for Old Faithful Area | 1977-05-05 |
|---|---|
| Astronomical Twilight Begin | 04:09 |
| Nautical Twilight Begin | 04:54 |
| Civil Twilight Begin | 05:35 |
| Sunrise | 06:07 |
| Sunset | 20:32 |
| Civil Twilight End | 21:04 |
| Nautical Twilight End | 21:45 |
| Astronomical Twilight End | 22:30 |
| Moon Illumination | 95.54% |