| Geyser | 1983-07-29 |
|---|---|
| Blue | 1500 |
| Crater Spring | 1200 |
| Echinus | 1457 |
| Palpitator Spring | 1430 |
| Steamboat | 1200 |
| Values for Old Faithful Area | 1983-07-29 |
|---|---|
| Astronomical Twilight Begin | 04:00 |
| Nautical Twilight Begin | 04:50 |
| Civil Twilight Begin | 05:32 |
| Sunrise | 06:06 |
| Sunset | 20:52 |
| Civil Twilight End | 21:26 |
| Nautical Twilight End | 22:09 |
| Astronomical Twilight End | 22:58 |
| Moon Illumination | 84.23% |