| Geyser | 1988-08-08 |
|---|---|
| Blue Mud Steam Vent | 1200 |
| Echinus | 1037, 1145, 1304, 1425, 1638 |
| Steamvalve Spring | 1117, 1535 |
| Values for Old Faithful Area | 1988-08-08 |
|---|---|
| Astronomical Twilight Begin | 04:21 |
| Nautical Twilight Begin | 05:06 |
| Civil Twilight Begin | 05:46 |
| Sunrise | 06:18 |
| Sunset | 20:38 |
| Civil Twilight End | 21:11 |
| Nautical Twilight End | 21:51 |
| Astronomical Twilight End | 22:36 |
| Moon Illumination | 16.6% |