| Values for Old Faithful Area | 2025-05-21 | 2025-05-22 |
|---|---|---|
| Astronomical Twilight Begin | 03:37 | 03:35 |
| Nautical Twilight Begin | 04:30 | 04:28 |
| Civil Twilight Begin | 05:14 | 05:13 |
| Sunrise | 05:49 | 05:48 |
| Sunset | 20:50 | 20:51 |
| Civil Twilight End | 21:25 | 21:26 |
| Nautical Twilight End | 22:09 | 22:11 |
| Astronomical Twilight End | 23:02 | 23:04 |
| Moon Illumination | 41.83% | 30.97% |