| Values for Old Faithful Area | 2025-05-12 | 2025-05-13 |
|---|---|---|
| Astronomical Twilight Begin | 03:54 | 03:52 |
| Nautical Twilight Begin | 04:42 | 04:41 |
| Civil Twilight Begin | 05:24 | 05:23 |
| Sunrise | 05:58 | 05:57 |
| Sunset | 20:40 | 20:42 |
| Civil Twilight End | 21:14 | 21:15 |
| Nautical Twilight End | 21:56 | 21:58 |
| Astronomical Twilight End | 22:45 | 22:47 |
| Moon Illumination | 99.82% | 99.72% |