| Geyser | 1988-07-09 |
|---|---|
| Echinus | 0851, 0945, 1050, 1207, 1320, 1535 |
| Steamvalve Spring | 1818 |
| Values for Old Faithful Area | 1988-07-09 |
|---|---|
| Astronomical Twilight Begin | 03:26 |
| Nautical Twilight Begin | 04:25 |
| Civil Twilight Begin | 05:12 |
| Sunrise | 05:48 |
| Sunset | 21:08 |
| Civil Twilight End | 21:44 |
| Nautical Twilight End | 22:31 |
| Astronomical Twilight End | 23:30 |
| Moon Illumination | 21.42% |