| Geyser | 1980-07-11 |
|---|---|
| Arsenic | 1637 |
| Echinus | 0912, 0936, 1032, 1104, 1200, 1225, 1359:02, 1423:25, 1551:19 |
| Steamboat | 1200 |
| Values for Old Faithful Area | 1980-07-11 |
|---|---|
| Astronomical Twilight Begin | 03:29 |
| Nautical Twilight Begin | 04:27 |
| Civil Twilight Begin | 05:14 |
| Sunrise | 05:49 |
| Sunset | 21:07 |
| Civil Twilight End | 21:43 |
| Nautical Twilight End | 22:30 |
| Astronomical Twilight End | 23:27 |
| Moon Illumination | 1.27% |