| Geyser | 1984-05-16 |
|---|---|
| Echinus | 1445 |
| Fireball | 1800 |
| Splutter Pot | 1800 |
| Values for Old Faithful Area | 1984-05-16 |
|---|---|
| Astronomical Twilight Begin | 03:46 |
| Nautical Twilight Begin | 04:36 |
| Civil Twilight Begin | 05:20 |
| Sunrise | 05:53 |
| Sunset | 20:45 |
| Civil Twilight End | 21:19 |
| Nautical Twilight End | 22:02 |
| Astronomical Twilight End | 22:52 |
| Moon Illumination | 98.55% |