| Geyser | 1991-07-29 |
|---|---|
| Echinus | 1010, 1105, 1207, 1300 maj, 1500, 1550, 1608 |
| Minute | 1543 ie |
| Steamboat | 1200 |
| Veteran | 1532 |
| Whirligig | 1608 |
| Values for Old Faithful Area | 1991-07-29 |
|---|---|
| Astronomical Twilight Begin | 04:01 |
| Nautical Twilight Begin | 04:50 |
| Civil Twilight Begin | 05:33 |
| Sunrise | 06:06 |
| Sunset | 20:52 |
| Civil Twilight End | 21:26 |
| Nautical Twilight End | 22:09 |
| Astronomical Twilight End | 22:58 |
| Moon Illumination | 94.24% |