| Geyser | 1948-09-12 |
|---|---|
| Morning | 1013 |
| Values for Old Faithful Area | 1948-09-12 |
|---|---|
| Astronomical Twilight Begin | 04:18 |
| Nautical Twilight Begin | 04:54 |
| Civil Twilight Begin | 05:29 |
| Sunrise | 05:58 |
| Sunset | 18:39 |
| Civil Twilight End | 19:09 |
| Nautical Twilight End | 19:43 |
| Astronomical Twilight End | 20:20 |
| Moon Illumination | 69.47% |