| Geyser | 1981-06-03 |
|---|---|
| Africa | 1800 |
| Arsenic | 1610 |
| Bear Den | 1505 |
| Steamvalve Spring | 1632 |
| Whirligig | 1628, 1742 |
| Values for Old Faithful Area | 1981-06-03 |
|---|---|
| Astronomical Twilight Begin | 03:18 |
| Nautical Twilight Begin | 04:17 |
| Civil Twilight Begin | 05:04 |
| Sunrise | 05:40 |
| Sunset | 21:02 |
| Civil Twilight End | 21:38 |
| Nautical Twilight End | 22:25 |
| Astronomical Twilight End | 23:24 |
| Moon Illumination | 0.87% |