| Geyser | 1990-09-01 |
|---|---|
| Echinus | 1005 maj, 1150, 1200, 1247, 1427 |
| Emerald Spring | 1200 |
| Gray Lakes | 1200 |
| Incline | 1021, 1305 |
| Values for Old Faithful Area | 1990-09-01 |
|---|---|
| Astronomical Twilight Begin | 05:01 |
| Nautical Twilight Begin | 05:40 |
| Civil Twilight Begin | 06:16 |
| Sunrise | 06:46 |
| Sunset | 20:00 |
| Civil Twilight End | 20:30 |
| Nautical Twilight End | 21:06 |
| Astronomical Twilight End | 21:44 |
| Moon Illumination | 84.48% |