| Geyser | 2023-04-04 |
|---|---|
| Event Non-Geyser Related | 1816 |
| Values for Old Faithful Area | 2023-04-04 |
|---|---|
| Astronomical Twilight Begin | 05:16 |
| Nautical Twilight Begin | 05:53 |
| Civil Twilight Begin | 06:29 |
| Sunrise | 06:58 |
| Sunset | 19:54 |
| Civil Twilight End | 20:23 |
| Nautical Twilight End | 20:58 |
| Astronomical Twilight End | 21:35 |
| Moon Illumination | 96.16% |