| Values for Old Faithful Area | 1976-10-23 |
|---|---|
| Astronomical Twilight Begin | 06:12 |
| Nautical Twilight Begin | 06:45 |
| Civil Twilight Begin | 07:19 |
| Sunrise | 07:49 |
| Sunset | 18:25 |
| Civil Twilight End | 18:55 |
| Nautical Twilight End | 19:29 |
| Astronomical Twilight End | 20:03 |
| Moon Illumination | 0% |