| Geyser | 1933-08-30 |
|---|---|
| Ebony | 0920, 1515 |
| Valentine | 1020 |
| Whirligig | 0625, 0750, 0915, 1040, 1205, 1320, 1508, 1635, 1700 |
| Values for Old Faithful Area | 1933-08-30 |
|---|---|
| Astronomical Twilight Begin | 03:58 |
| Nautical Twilight Begin | 04:36 |
| Civil Twilight Begin | 05:13 |
| Sunrise | 05:43 |
| Sunset | 19:04 |
| Civil Twilight End | 19:34 |
| Nautical Twilight End | 20:10 |
| Astronomical Twilight End | 20:49 |
| Moon Illumination | 70.84% |