| Geyser | 2023-04-01 |
|---|---|
| Event Non-Geyser Related | 2035 |
| Other Geyser | 1246 |
| Whirligig | 0332:38 E, 1032:38 E |
| Values for Old Faithful Area | 2023-04-01 |
|---|---|
| Astronomical Twilight Begin | 05:23 |
| Nautical Twilight Begin | 05:59 |
| Civil Twilight Begin | 06:34 |
| Sunrise | 07:03 |
| Sunset | 19:50 |
| Civil Twilight End | 20:19 |
| Nautical Twilight End | 20:54 |
| Astronomical Twilight End | 21:31 |
| Moon Illumination | 78.06% |