| Geyser | 2002-04-01 |
|---|---|
| Artemisia | 0620 E, 1420 E |
| Castle | 1042 E, 2300 E |
| Fountain | 0109 E, 0547 E, 1035 E, 1527 E, 2031 E |
| Grand | 0037 E, 0950 E, 1928 E |
| Great Fountain | 1143 E |
| Grotto | 1248 E |
| Values for Old Faithful Area | 2002-04-01 |
|---|---|
| Astronomical Twilight Begin | 04:23 |
| Nautical Twilight Begin | 04:59 |
| Civil Twilight Begin | 05:34 |
| Sunrise | 06:03 |
| Sunset | 18:50 |
| Civil Twilight End | 19:19 |
| Nautical Twilight End | 19:54 |
| Astronomical Twilight End | 20:31 |
| Moon Illumination | 83.08% |