| Geyser | 1967-06-21 |
|---|---|
| Echinus | 0830, 0928, 1026, 1125, 1321, 1421, 1519, 1618, 1716 |
| Pearl | 1200 |
| Steamboat | 0800 |
| Vixen | 1200 |
| Values for Old Faithful Area | 1967-06-21 |
|---|---|
| Astronomical Twilight Begin | 03:09 |
| Nautical Twilight Begin | 04:12 |
| Civil Twilight Begin | 05:01 |
| Sunrise | 05:38 |
| Sunset | 21:11 |
| Civil Twilight End | 21:48 |
| Nautical Twilight End | 22:36 |
| Astronomical Twilight End | 23:40 |
| Moon Illumination | 98.81% |