| Geyser | 1967-06-20 |
|---|---|
| Cistern Spring | 0800 |
| Constant | 1730 |
| Echinus | 0815, 0912, 1010, 1107, 1205, 1354, 1454, 1551, 1650 |
| Steamboat | 0800, 0810 |
| Valentine | 0000 |
| Values for Old Faithful Area | 1967-06-20 |
|---|---|
| Astronomical Twilight Begin | 03:09 |
| Nautical Twilight Begin | 04:12 |
| Civil Twilight Begin | 05:01 |
| Sunrise | 05:38 |
| Sunset | 21:11 |
| Civil Twilight End | 21:47 |
| Nautical Twilight End | 22:36 |
| Astronomical Twilight End | 23:39 |
| Moon Illumination | 94.94% |