| Geyser | 2002-04-06 |
|---|---|
| Artemisia | 0640 E, 1610 E |
| Castle | 0906 E, 2130 E |
| Fountain | 0245 E, 0802 E, 1315 E, 1839 E |
| Grand | 0012 E, 1026 E, 1922 E |
| Great Fountain | 0818 E, 2223 E |
| Grotto | 1128 E, 1943 E |
| Values for Old Faithful Area | 2002-04-06 |
|---|---|
| Astronomical Twilight Begin | 04:12 |
| Nautical Twilight Begin | 04:49 |
| Civil Twilight Begin | 05:25 |
| Sunrise | 05:54 |
| Sunset | 18:56 |
| Civil Twilight End | 19:26 |
| Nautical Twilight End | 20:01 |
| Astronomical Twilight End | 20:39 |
| Moon Illumination | 34.05% |