| Geyser | 1980-09-26 |
|---|---|
| Cistern Spring | 1200 |
| Echinus | 1207 min, 1215 |
| Emerald Spring | 1200 |
| Little Whirligig | 1412 ie, 1702 ie |
| Steamboat | 1200 |
| Valentine | 1520 ie |
| Whirligig | 1020, 1422, 1522, 1622, 1800 |
| Values for Old Faithful Area | 1980-09-26 |
|---|---|
| Astronomical Twilight Begin | 05:38 |
| Nautical Twilight Begin | 06:12 |
| Civil Twilight Begin | 06:46 |
| Sunrise | 07:15 |
| Sunset | 19:13 |
| Civil Twilight End | 19:42 |
| Nautical Twilight End | 20:15 |
| Astronomical Twilight End | 20:50 |
| Moon Illumination | 95.33% |