| Geyser | 1969-08-18 |
|---|---|
| Cats Eye Spring | 1200 |
| Congress Pool | 1200 |
| Dark Cavern | 1200 |
| Echinus | 1027, 1108, 1151, 1420, 1510 |
| Jetsam Pool | 1200 |
| Ledge | 1200 |
| Values for Old Faithful Area | 1969-08-18 |
|---|---|
| Astronomical Twilight Begin | 04:38 |
| Nautical Twilight Begin | 05:20 |
| Civil Twilight Begin | 05:58 |
| Sunrise | 06:29 |
| Sunset | 20:24 |
| Civil Twilight End | 20:55 |
| Nautical Twilight End | 21:33 |
| Astronomical Twilight End | 22:15 |
| Moon Illumination | 23.53% |