| Geyser | 1975-12-16 |
|---|---|
| Lion | 1122, 1327, 1446 |
| Old Faithful | 1224 short, 1304 long, 1422 short, 1519 long |
| Values for Old Faithful Area | 1975-12-16 |
|---|---|
| Astronomical Twilight Begin | 06:07 |
| Nautical Twilight Begin | 06:43 |
| Civil Twilight Begin | 07:19 |
| Sunrise | 07:53 |
| Sunset | 16:44 |
| Civil Twilight End | 17:17 |
| Nautical Twilight End | 17:54 |
| Astronomical Twilight End | 18:29 |
| Moon Illumination | 94.34% |