| Geyser | 1988-08-14 |
|---|---|
| Cistern Spring | 1200 |
| Dog's Leg Spring | 1800 |
| Echinus | 0959, 1145, 1300, 1410, 1515 |
| Fireball | 0953, 1535 |
| Harding | 1200 |
| Pearl | 1200 |
| Steamvalve Spring | 1335 |
| Values for Old Faithful Area | 1988-08-14 |
|---|---|
| Astronomical Twilight Begin | 04:32 |
| Nautical Twilight Begin | 05:15 |
| Civil Twilight Begin | 05:54 |
| Sunrise | 06:25 |
| Sunset | 20:30 |
| Civil Twilight End | 21:01 |
| Nautical Twilight End | 21:40 |
| Astronomical Twilight End | 22:23 |
| Moon Illumination | 2.67% |