| Geyser | 1980-09-01 |
|---|---|
| Bear Den | 1344, 1704, 2026 |
| Echinus | 1052, 1821 |
| Porkchop | 1848 ie |
| Valentine | 1700 A |
| Values for Old Faithful Area | 1980-09-01 |
|---|---|
| Astronomical Twilight Begin | 05:02 |
| Nautical Twilight Begin | 05:40 |
| Civil Twilight Begin | 06:16 |
| Sunrise | 06:46 |
| Sunset | 19:59 |
| Civil Twilight End | 20:29 |
| Nautical Twilight End | 21:05 |
| Astronomical Twilight End | 21:43 |
| Moon Illumination | 55.78% |