| Geyser | 2002-04-02 |
|---|---|
| Artemisia | 0400 E, 1750 E |
| Castle | 0224 E, 1206 E |
| Fountain | 0119 E, 0600 E, 1058 E, 1549 E, 2037 E |
| Giant | 1417 ie |
| Grand | 0553 E, 1405 E |
| Great Fountain | 0328 E, 1633 E |
| Grotto | 0058 E, 0633 E, 1208 E |
| Values for Old Faithful Area | 2002-04-02 |
|---|---|
| Astronomical Twilight Begin | 04:20 |
| Nautical Twilight Begin | 04:57 |
| Civil Twilight Begin | 05:32 |
| Sunrise | 06:01 |
| Sunset | 18:51 |
| Civil Twilight End | 19:21 |
| Nautical Twilight End | 19:56 |
| Astronomical Twilight End | 20:32 |
| Moon Illumination | 73.91% |