| Geyser | 1989-10-07 |
|---|---|
| Echinus | 1133 |
| Steamboat | 1200 |
| Yellow Funnel Spring | 1200 |
| Values for Old Faithful Area | 1989-10-07 |
|---|---|
| Astronomical Twilight Begin | 05:52 |
| Nautical Twilight Begin | 06:26 |
| Civil Twilight Begin | 06:59 |
| Sunrise | 07:28 |
| Sunset | 18:53 |
| Civil Twilight End | 19:22 |
| Nautical Twilight End | 19:55 |
| Astronomical Twilight End | 20:29 |
| Moon Illumination | 42.1% |