| Geyser | 1998-12-01 |
|---|---|
| Fan and Mortar | 1200 |
| Giant | 1200 |
| Little Cub | 1506 ie |
| Plume | 1505, 1541, 1617 |
| Sawmill | 1521 ie |
| Splendid | 0000-2359, 1200 |
| Values for Old Faithful Area | 1998-12-01 |
|---|---|
| Astronomical Twilight Begin | 05:55 |
| Nautical Twilight Begin | 06:30 |
| Civil Twilight Begin | 07:07 |
| Sunrise | 07:39 |
| Sunset | 16:45 |
| Civil Twilight End | 17:17 |
| Nautical Twilight End | 17:54 |
| Astronomical Twilight End | 18:29 |
| Moon Illumination | 91.91% |