| Geyser | 1967-09-27 |
|---|---|
| Cistern Spring | 1800 |
| Ledge | 1800 |
| Mud Spring | 1200 |
| Tantalus | 1800 |
| Valentine | 1800 |
| Veteran | 1455 A |
| Values for Old Faithful Area | 1967-09-27 |
|---|---|
| Astronomical Twilight Begin | 05:38 |
| Nautical Twilight Begin | 06:13 |
| Civil Twilight Begin | 06:47 |
| Sunrise | 07:15 |
| Sunset | 19:12 |
| Civil Twilight End | 19:41 |
| Nautical Twilight End | 20:15 |
| Astronomical Twilight End | 20:50 |
| Moon Illumination | 46.44% |