| Geyser | 1948-09-01 |
|---|---|
| Morning | 1016 |
| Values for Old Faithful Area | 1948-09-01 |
|---|---|
| Astronomical Twilight Begin | 04:02 |
| Nautical Twilight Begin | 04:40 |
| Civil Twilight Begin | 05:16 |
| Sunrise | 05:46 |
| Sunset | 19:00 |
| Civil Twilight End | 19:30 |
| Nautical Twilight End | 20:06 |
| Astronomical Twilight End | 20:44 |
| Moon Illumination | 7.23% |