| Geyser | 1971-10-11 |
|---|---|
| Castle | 1010, 1355 |
| Little Cub | 0948 |
| Old Faithful | 0828 long, 0939 short, 1023 long, 1137 short, 1425 long, 1549 short, 1638 long |
| Values for Old Faithful Area | 1971-10-11 |
|---|---|
| Astronomical Twilight Begin | 05:56 |
| Nautical Twilight Begin | 06:30 |
| Civil Twilight Begin | 07:03 |
| Sunrise | 07:32 |
| Sunset | 18:47 |
| Civil Twilight End | 19:16 |
| Nautical Twilight End | 19:50 |
| Astronomical Twilight End | 20:23 |
| Moon Illumination | 49.98% |