| Geyser | 1988-07-08 |
|---|---|
| Constant | 1010 |
| Echinus | 1305, 1504, 1621 |
| Giantess | 0857 |
| Guardian | 1010 ? A |
| Valentine | 1500 A |
| Whirligig | 1200 |
| Values for Old Faithful Area | 1988-07-08 |
|---|---|
| Astronomical Twilight Begin | 03:25 |
| Nautical Twilight Begin | 04:24 |
| Civil Twilight Begin | 05:11 |
| Sunrise | 05:47 |
| Sunset | 21:09 |
| Civil Twilight End | 21:45 |
| Nautical Twilight End | 22:32 |
| Astronomical Twilight End | 23:31 |
| Moon Illumination | 30.89% |