| Geyser | 2023-03-31 |
|---|---|
| Event Non-Geyser Related | 1936 |
| Whirligig | 0118:38 E, 0426:38 E min, 0522:38 E min, 0910:38 E, 1508:38 E min, 1756:38 E min, 2208:38 E |
| Values for Old Faithful Area | 2023-03-31 |
|---|---|
| Astronomical Twilight Begin | 05:25 |
| Nautical Twilight Begin | 06:01 |
| Civil Twilight Begin | 06:36 |
| Sunrise | 07:05 |
| Sunset | 19:49 |
| Civil Twilight End | 20:18 |
| Nautical Twilight End | 20:53 |
| Astronomical Twilight End | 21:29 |
| Moon Illumination | 69.77% |