| Geyser | 2002-04-08 |
|---|---|
| Artemisia | 0540 E, 2015 E |
| Castle | 1142 E |
| Fountain | 0153 E, 0651 E, 1204 E, 1702 E, 2159 E |
| Grand | 0226 E, 1336 E |
| Great Fountain | 0253 E, 1513 E |
| Grotto | 1223 E, 1813 E |
| Values for Old Faithful Area | 2002-04-08 |
|---|---|
| Astronomical Twilight Begin | 05:07 |
| Nautical Twilight Begin | 05:45 |
| Civil Twilight Begin | 06:21 |
| Sunrise | 06:51 |
| Sunset | 19:59 |
| Civil Twilight End | 20:28 |
| Nautical Twilight End | 21:04 |
| Astronomical Twilight End | 21:42 |
| Moon Illumination | 17.74% |