| Geyser | 2023-04-07 |
|---|---|
| Event Non-Geyser Related | 2010 |
| Values for Old Faithful Area | 2023-04-07 |
|---|---|
| Astronomical Twilight Begin | 05:10 |
| Nautical Twilight Begin | 05:47 |
| Civil Twilight Begin | 06:23 |
| Sunrise | 06:53 |
| Sunset | 19:57 |
| Civil Twilight End | 20:27 |
| Nautical Twilight End | 21:03 |
| Astronomical Twilight End | 21:40 |
| Moon Illumination | 98.81% |