| Geyser | 1983-07-24 |
|---|---|
| Arsenic | 2000 A |
| Bear Den | 1045, 1436 |
| Blue | 2000 A |
| Constant | 1130 |
| Echinus | 0908, 1449, 1534, 1615, 1949 |
| Fireball | 2000 A |
| Splutter Pot | 2000 A |
| Steamboat | 1200 |
| Whirligig | 2004 |
| Values for Old Faithful Area | 1983-07-24 |
|---|---|
| Astronomical Twilight Begin | 03:51 |
| Nautical Twilight Begin | 04:43 |
| Civil Twilight Begin | 05:27 |
| Sunrise | 06:01 |
| Sunset | 20:58 |
| Civil Twilight End | 21:32 |
| Nautical Twilight End | 22:16 |
| Astronomical Twilight End | 23:08 |
| Moon Illumination | 99.53% |