| Geyser | 1979-06-15 |
|---|---|
| Bear Den | 1129 |
| Constant | 1605 |
| Echinus | 0907 |
| Little Whirligig | 0915, 1520 |
| Rubble | 1800 |
| Whirligig | 1550 |
| Values for Old Faithful Area | 1979-06-15 |
|---|---|
| Astronomical Twilight Begin | 03:09 |
| Nautical Twilight Begin | 04:12 |
| Civil Twilight Begin | 05:01 |
| Sunrise | 05:37 |
| Sunset | 21:09 |
| Civil Twilight End | 21:46 |
| Nautical Twilight End | 22:34 |
| Astronomical Twilight End | 23:37 |
| Moon Illumination | 71.87% |