| Geyser | 1991-07-01 |
|---|---|
| Constant | 1633 |
| Echinus | 1018, 1110, 1125 maj, 1255, 1310, 1334, 1418, 1435, 1539, 1640 |
| Vixen | 1155 |
| Whirligig | 1649 |
| Values for Old Faithful Area | 1991-07-01 |
|---|---|
| Astronomical Twilight Begin | 03:15 |
| Nautical Twilight Begin | 04:17 |
| Civil Twilight Begin | 05:05 |
| Sunrise | 05:42 |
| Sunset | 21:11 |
| Civil Twilight End | 21:48 |
| Nautical Twilight End | 22:36 |
| Astronomical Twilight End | 23:38 |
| Moon Illumination | 85.21% |