| Geyser | 1988-08-15 |
|---|---|
| Echinus | 0920, 1006, 1122, 1243, 1440 |
| Fan and Mortar | 0000 A |
| Fireball | 0953, 1535 |
| Steamvalve Spring | 1335 |
| Values for Old Faithful Area | 1988-08-15 |
|---|---|
| Astronomical Twilight Begin | 04:34 |
| Nautical Twilight Begin | 05:16 |
| Civil Twilight Begin | 05:55 |
| Sunrise | 06:26 |
| Sunset | 20:28 |
| Civil Twilight End | 20:59 |
| Nautical Twilight End | 21:38 |
| Astronomical Twilight End | 22:21 |
| Moon Illumination | 6.57% |