| Geyser | 1981-11-27 |
|---|---|
| Basin | 1200 |
| Black Growler | 1200 |
| Cats Eye Spring | 1200 |
| Dark Cavern | 1200 |
| Guardian | 1200 |
| Jetsam Pool | 1200 |
| Ledge | 1200 |
| Scummy Pool | 1200 |
| Values for Old Faithful Area | 1981-11-27 |
|---|---|
| Astronomical Twilight Begin | 05:51 |
| Nautical Twilight Begin | 06:26 |
| Civil Twilight Begin | 07:02 |
| Sunrise | 07:35 |
| Sunset | 16:47 |
| Civil Twilight End | 17:19 |
| Nautical Twilight End | 17:55 |
| Astronomical Twilight End | 18:30 |
| Moon Illumination | 0.4% |