| Geyser | 1933-08-14 |
|---|---|
| Ebony | 1030 |
| Valentine | 2015 |
| Whirligig | 0640, 0813, 0940, 1110, 1240, 1412, 1535, 1705 |
| Values for Old Faithful Area | 1933-08-14 |
|---|---|
| Astronomical Twilight Begin | 03:30 |
| Nautical Twilight Begin | 04:14 |
| Civil Twilight Begin | 04:53 |
| Sunrise | 05:24 |
| Sunset | 19:31 |
| Civil Twilight End | 20:02 |
| Nautical Twilight End | 20:41 |
| Astronomical Twilight End | 21:24 |
| Moon Illumination | 39.32% |