| Values for Old Faithful Area | 2025-07-27 | 2025-07-28 |
|---|---|---|
| Astronomical Twilight Begin | 03:58 | 04:00 |
| Nautical Twilight Begin | 04:48 | 04:50 |
| Civil Twilight Begin | 05:31 | 05:32 |
| Sunrise | 06:05 | 06:06 |
| Sunset | 20:54 | 20:53 |
| Civil Twilight End | 21:28 | 21:26 |
| Nautical Twilight End | 22:10 | 22:09 |
| Astronomical Twilight End | 23:00 | 22:58 |
| Moon Illumination | 6.92% | 13.06% |