| Geyser | 1985-05-12 |
|---|---|
| Cistern Spring | 1200 |
| Crater Spring | 1200 |
| Emerald Spring | 1200 |
| Pearl | 1200 |
| Porkchop | 1200 |
| Rediscovered | 1200 |
| Yellow Funnel Spring | 1200 |
| Values for Old Faithful Area | 1985-05-12 |
|---|---|
| Astronomical Twilight Begin | 03:54 |
| Nautical Twilight Begin | 04:43 |
| Civil Twilight Begin | 05:25 |
| Sunrise | 05:58 |
| Sunset | 20:40 |
| Civil Twilight End | 21:13 |
| Nautical Twilight End | 21:56 |
| Astronomical Twilight End | 22:44 |
| Moon Illumination | 44.92% |