| Geyser | 1933-08-11 |
|---|---|
| Ebony | 1130, 1630 |
| Valentine | 1410 |
| Whirligig | 0810, 0940, 1110, 1245, 1425, 1600 |
| Values for Old Faithful Area | 1933-08-11 |
|---|---|
| Astronomical Twilight Begin | 03:25 |
| Nautical Twilight Begin | 04:09 |
| Civil Twilight Begin | 04:49 |
| Sunrise | 05:21 |
| Sunset | 19:35 |
| Civil Twilight End | 20:07 |
| Nautical Twilight End | 20:47 |
| Astronomical Twilight End | 21:31 |
| Moon Illumination | 67.96% |