| Geyser | 2002-04-09 |
|---|---|
| Artemisia | 1045 E |
| Castle | 0148 E, 1412 E |
| Fountain | 0247 E, 0921 E, 1347 E, 1942 E |
| Grand | 0010 E, 1119 E, 2224 E |
| Great Fountain | 0413 E, 1758 E |
| Grotto | 0038 E, 0608 E, 1253 E, 1843 E |
| Values for Old Faithful Area | 2002-04-09 |
|---|---|
| Astronomical Twilight Begin | 05:05 |
| Nautical Twilight Begin | 05:43 |
| Civil Twilight Begin | 06:19 |
| Sunrise | 06:49 |
| Sunset | 20:00 |
| Civil Twilight End | 20:30 |
| Nautical Twilight End | 21:06 |
| Astronomical Twilight End | 21:43 |
| Moon Illumination | 11.11% |