| Geyser | 1981-06-28 |
|---|---|
| Echinus | 1030, 1213, 1617 |
| Porkchop | 1056 ie |
| Sunday | 1900 |
| Veteran | 1647 |
| Whirligig | 1750, 1835 |
| Values for Old Faithful Area | 1981-06-28 |
|---|---|
| Astronomical Twilight Begin | 03:13 |
| Nautical Twilight Begin | 04:16 |
| Civil Twilight Begin | 05:04 |
| Sunrise | 05:41 |
| Sunset | 21:12 |
| Civil Twilight End | 21:48 |
| Nautical Twilight End | 22:37 |
| Astronomical Twilight End | 23:39 |
| Moon Illumination | 17.36% |