| Geyser | 1980-09-06 |
|---|---|
| Arsenic | 1354 |
| Basin | 1200 |
| Black Growler | 1200 |
| Dark Cavern | 1200 |
| Echinus | 1447, 1529, 1609, 1650, 1731 |
| Guardian | 1200 |
| Jetsam Pool | 1200 |
| Ledge | 1200 |
| Steamboat | 1200 |
| Valentine | 1200 |
| Whirligig | 1355, 1613 |
| Values for Old Faithful Area | 1980-09-06 |
|---|---|
| Astronomical Twilight Begin | 05:10 |
| Nautical Twilight Begin | 05:47 |
| Civil Twilight Begin | 06:22 |
| Sunrise | 06:52 |
| Sunset | 19:50 |
| Civil Twilight End | 20:20 |
| Nautical Twilight End | 20:55 |
| Astronomical Twilight End | 21:32 |
| Moon Illumination | 9.43% |