| Geyser | 1983-04-16 |
|---|---|
| Steamboat | 1657 |
| Values for Old Faithful Area | 1983-04-16 |
|---|---|
| Astronomical Twilight Begin | 03:51 |
| Nautical Twilight Begin | 04:30 |
| Civil Twilight Begin | 05:07 |
| Sunrise | 05:37 |
| Sunset | 19:08 |
| Civil Twilight End | 19:38 |
| Nautical Twilight End | 20:15 |
| Astronomical Twilight End | 20:55 |
| Moon Illumination | 10.05% |