| Geyser | 1952-09-04 |
|---|---|
| Giantess | 1200 A |
| Infant | 1200 A |
| Values for Old Faithful Area | 1952-09-04 |
|---|---|
| Astronomical Twilight Begin | 04:06 |
| Nautical Twilight Begin | 04:44 |
| Civil Twilight Begin | 05:20 |
| Sunrise | 05:49 |
| Sunset | 18:54 |
| Civil Twilight End | 19:24 |
| Nautical Twilight End | 19:59 |
| Astronomical Twilight End | 20:37 |
| Moon Illumination | 99.96% |