| Geyser | 1975-12-10 |
|---|---|
| Beehive | 1555 |
| Depression | 1341 |
| Dome | 0000-1200 |
| Old Faithful | 1104 long, 1211 long, 1325 long, 1428 long |
| Round | 1146 |
| Values for Old Faithful Area | 1975-12-10 |
|---|---|
| Astronomical Twilight Begin | 06:03 |
| Nautical Twilight Begin | 06:38 |
| Civil Twilight Begin | 07:15 |
| Sunrise | 07:48 |
| Sunset | 16:43 |
| Civil Twilight End | 17:16 |
| Nautical Twilight End | 17:53 |
| Astronomical Twilight End | 18:28 |
| Moon Illumination | 46.9% |