| Geyser | 1988-07-04 |
|---|---|
| Dark Cavern | 1800 |
| Echinus | 1020, 1438, 1557 |
| Values for Old Faithful Area | 1988-07-04 |
|---|---|
| Astronomical Twilight Begin | 03:20 |
| Nautical Twilight Begin | 04:20 |
| Civil Twilight Begin | 05:08 |
| Sunrise | 05:44 |
| Sunset | 21:10 |
| Civil Twilight End | 21:47 |
| Nautical Twilight End | 22:34 |
| Astronomical Twilight End | 23:35 |
| Moon Illumination | 74.62% |