| Geyser | 1983-07-06 |
|---|---|
| Echinus | 0809, 0853, 1035 |
| Steamboat | 1200 |
| Steamvalve Spring | 1031 |
| Whirligig | 0950 |
| Values for Old Faithful Area | 1983-07-06 |
|---|---|
| Astronomical Twilight Begin | 03:21 |
| Nautical Twilight Begin | 04:21 |
| Civil Twilight Begin | 05:09 |
| Sunrise | 05:45 |
| Sunset | 21:10 |
| Civil Twilight End | 21:46 |
| Nautical Twilight End | 22:34 |
| Astronomical Twilight End | 23:34 |
| Moon Illumination | 23.03% |