| Geyser | 1991-08-05 |
|---|---|
| Crater Spring | 1200 |
| Echinus | 0948, 1043, 1148, 1246, 1347 maj, 1537 |
| Green Dragon Spring | 1200 |
| Rubble | 1200 |
| Steamboat | 1200 |
| Valentine | 1534 ie |
| Whirligig | 0808, 1632 |
| Values for Old Faithful Area | 1991-08-05 |
|---|---|
| Astronomical Twilight Begin | 04:14 |
| Nautical Twilight Begin | 05:00 |
| Civil Twilight Begin | 05:41 |
| Sunrise | 06:14 |
| Sunset | 20:44 |
| Civil Twilight End | 21:16 |
| Nautical Twilight End | 21:57 |
| Astronomical Twilight End | 22:44 |
| Moon Illumination | 30.62% |