| Geyser | 1998-12-04 |
|---|---|
| Aurum | 1323 |
| Daisy | 1209, 1349, 1536 |
| Grand | 1515 |
| Lion | 1529 ie |
| Old Faithful | 0910 ie, 1323, 1451 |
| Riverside | 1234 |
| Sawmill | 1202 ie |
| West Triplet | 1341 |
| Values for Old Faithful Area | 1998-12-04 |
|---|---|
| Astronomical Twilight Begin | 05:58 |
| Nautical Twilight Begin | 06:33 |
| Civil Twilight Begin | 07:10 |
| Sunrise | 07:42 |
| Sunset | 16:44 |
| Civil Twilight End | 17:17 |
| Nautical Twilight End | 17:53 |
| Astronomical Twilight End | 18:28 |
| Moon Illumination | 99.38% |