| Geyser | 1971-05-09 |
|---|---|
| Beehive | 1408 |
| Castle | 0740, 1540 |
| Old Faithful | 0815 long, 0927 short, 1031 short, 1125 long, 1240, 1349 long, 1456 long, 1609 short, 1708 |
| Values for Old Faithful Area | 1971-05-09 |
|---|---|
| Astronomical Twilight Begin | 04:01 |
| Nautical Twilight Begin | 04:48 |
| Civil Twilight Begin | 05:30 |
| Sunrise | 06:03 |
| Sunset | 20:36 |
| Civil Twilight End | 21:09 |
| Nautical Twilight End | 21:50 |
| Astronomical Twilight End | 22:37 |
| Moon Illumination | 98.52% |