| Geyser | 1991-06-16 |
|---|---|
| Crater Spring | 1200 |
| Echinus | 0915, 1055, 1158, 1200, 1210 ?, 1300, 1321, 1415, 1500, 1548 |
| Scummy Pool | 1200 |
| Yellow Funnel Spring | 1200 |
| Values for Old Faithful Area | 1991-06-16 |
|---|---|
| Astronomical Twilight Begin | 03:09 |
| Nautical Twilight Begin | 04:12 |
| Civil Twilight Begin | 05:01 |
| Sunrise | 05:37 |
| Sunset | 21:09 |
| Civil Twilight End | 21:46 |
| Nautical Twilight End | 22:35 |
| Astronomical Twilight End | 23:38 |
| Moon Illumination | 19.56% |