| Geyser | 1984-09-09 |
|---|---|
| Arsenic | 1432 |
| Branch Spring | 1312, 1313 ie, 1331:50, 1405:46, 1433:17, 1504:19 |
| Values for Old Faithful Area | 1984-09-09 |
|---|---|
| Astronomical Twilight Begin | 05:14 |
| Nautical Twilight Begin | 05:51 |
| Civil Twilight Begin | 06:26 |
| Sunrise | 06:55 |
| Sunset | 19:45 |
| Civil Twilight End | 20:14 |
| Nautical Twilight End | 20:49 |
| Astronomical Twilight End | 21:25 |
| Moon Illumination | 99% |