| Geyser | 1988-08-11 |
|---|---|
| Echinus | 1020, 1138, 1245, 1308, 1345, 1551 maj |
| Steamvalve Spring | 0933, 1433 |
| Veteran | 1308 |
| Values for Old Faithful Area | 1988-08-11 |
|---|---|
| Astronomical Twilight Begin | 04:26 |
| Nautical Twilight Begin | 05:10 |
| Civil Twilight Begin | 05:50 |
| Sunrise | 06:22 |
| Sunset | 20:34 |
| Civil Twilight End | 21:06 |
| Nautical Twilight End | 21:46 |
| Astronomical Twilight End | 22:29 |
| Moon Illumination | 1.52% |