| Geyser | 1933-08-01 |
|---|---|
| Ebony | 0835, 1345 |
| Valentine | 1315 |
| Whirligig | 0755, 0940, 1120, 1310, 1450, 1635 |
| Values for Old Faithful Area | 1933-08-01 |
|---|---|
| Astronomical Twilight Begin | 03:06 |
| Nautical Twilight Begin | 03:54 |
| Civil Twilight Begin | 04:36 |
| Sunrise | 05:09 |
| Sunset | 19:49 |
| Civil Twilight End | 20:22 |
| Nautical Twilight End | 21:04 |
| Astronomical Twilight End | 21:52 |
| Moon Illumination | 73.21% |