| Geyser | 1979-08-16 |
|---|---|
| Constant | 1258 |
| Echinus | 0835, 1128, 1420 |
| Little Whirligig | 1025, 1237 |
| Values for Old Faithful Area | 1979-08-16 |
|---|---|
| Astronomical Twilight Begin | 04:34 |
| Nautical Twilight Begin | 05:16 |
| Civil Twilight Begin | 05:55 |
| Sunrise | 06:27 |
| Sunset | 20:28 |
| Civil Twilight End | 20:59 |
| Nautical Twilight End | 21:38 |
| Astronomical Twilight End | 22:20 |
| Moon Illumination | 34.95% |