| Geyser | 1980-09-19 |
|---|---|
| Echinus | 1520:10 min, 1730:11, 1759:37 min, 1837:16 min |
| Whirligig | 1110 |
| Values for Old Faithful Area | 1980-09-19 |
|---|---|
| Astronomical Twilight Begin | 05:29 |
| Nautical Twilight Begin | 06:04 |
| Civil Twilight Begin | 06:38 |
| Sunrise | 07:07 |
| Sunset | 19:26 |
| Civil Twilight End | 19:55 |
| Nautical Twilight End | 20:29 |
| Astronomical Twilight End | 21:04 |
| Moon Illumination | 66.96% |