| Geyser | 1968-08-31 |
|---|---|
| Cistern Spring | 1200 |
| Ebony | 0000 A |
| Echinus | 0704, 1014, 1255 |
| Ledge | 0000 A |
| Steamboat | 0800 |
| Values for Old Faithful Area | 1968-08-31 |
|---|---|
| Astronomical Twilight Begin | 05:00 |
| Nautical Twilight Begin | 05:39 |
| Civil Twilight Begin | 06:15 |
| Sunrise | 06:45 |
| Sunset | 20:01 |
| Civil Twilight End | 20:31 |
| Nautical Twilight End | 21:07 |
| Astronomical Twilight End | 21:46 |
| Moon Illumination | 53.17% |