| Geyser | 1986-08-18 |
|---|---|
| Echinus | 0930, 1040, 1300, 1420, 1535, 1648 |
| Steamvalve Spring | 1025 |
| Values for Old Faithful Area | 1986-08-18 |
|---|---|
| Astronomical Twilight Begin | 04:38 |
| Nautical Twilight Begin | 05:20 |
| Civil Twilight Begin | 05:58 |
| Sunrise | 06:29 |
| Sunset | 20:24 |
| Civil Twilight End | 20:55 |
| Nautical Twilight End | 21:33 |
| Astronomical Twilight End | 22:15 |
| Moon Illumination | 96.77% |