| Geyser | 1981-11-15 |
|---|---|
| Blue Mud Steam Vent | 1200 |
| Rubble | 1800 |
| UNNG-NBK-8 | 1200 |
| Values for Old Faithful Area | 1981-11-15 |
|---|---|
| Astronomical Twilight Begin | 05:38 |
| Nautical Twilight Begin | 06:13 |
| Civil Twilight Begin | 06:48 |
| Sunrise | 07:19 |
| Sunset | 16:56 |
| Civil Twilight End | 17:27 |
| Nautical Twilight End | 18:02 |
| Astronomical Twilight End | 18:37 |
| Moon Illumination | 84.09% |