| Geyser | 1986-04-08 |
|---|---|
| Arsenic | 1100 ie |
| Blue | 1100 ie |
| Constant | 1126, 1129, 1304, 1431, 1606 |
| Fantail | 1356 |
| Fireball | 1102 ie, 1326, 1513 |
| Ledge | 1036 ie |
| Splutter Pot | 1608 |
| Values for Old Faithful Area | 1986-04-08 |
|---|---|
| Astronomical Twilight Begin | 04:08 |
| Nautical Twilight Begin | 04:45 |
| Civil Twilight Begin | 05:21 |
| Sunrise | 05:51 |
| Sunset | 18:58 |
| Civil Twilight End | 19:28 |
| Nautical Twilight End | 20:04 |
| Astronomical Twilight End | 20:42 |
| Moon Illumination | 0.93% |