| Geyser | 1980-09-28 |
|---|---|
| Blue | 1200 |
| Cistern Spring | 1200 |
| Echinus | 1245 |
| Little Whirligig | 1603 ie |
| Valentine | 1345 A |
| Whirligig | 1413 |
| Values for Old Faithful Area | 1980-09-28 |
|---|---|
| Astronomical Twilight Begin | 05:41 |
| Nautical Twilight Begin | 06:15 |
| Civil Twilight Begin | 06:49 |
| Sunrise | 07:18 |
| Sunset | 19:09 |
| Civil Twilight End | 19:38 |
| Nautical Twilight End | 20:12 |
| Astronomical Twilight End | 20:46 |
| Moon Illumination | 80.33% |