| Geyser | 1933-08-10 |
|---|---|
| Ebony | 0854 |
| Valentine | 1830 |
| Whirligig | 0630, 0800, 0930, 1100, 1230, 1400, 1530 |
| Values for Old Faithful Area | 1933-08-10 |
|---|---|
| Astronomical Twilight Begin | 03:23 |
| Nautical Twilight Begin | 04:08 |
| Civil Twilight Begin | 04:48 |
| Sunrise | 05:20 |
| Sunset | 19:37 |
| Civil Twilight End | 20:09 |
| Nautical Twilight End | 20:49 |
| Astronomical Twilight End | 21:33 |
| Moon Illumination | 77.04% |