| Geyser | 1975-12-28 |
|---|---|
| Beehive's Indicator | 1957 ie |
| Depression | 1401 |
| Grand | 1255 ie |
| Old Faithful | 0855, 0959 short, 1106, 1215, 1334 short, 1430 long, 1542 short |
| Plume | 1115 |
| Values for Old Faithful Area | 1975-12-28 |
|---|---|
| Astronomical Twilight Begin | 06:13 |
| Nautical Twilight Begin | 06:48 |
| Civil Twilight Begin | 07:25 |
| Sunrise | 07:59 |
| Sunset | 16:50 |
| Civil Twilight End | 17:23 |
| Nautical Twilight End | 18:00 |
| Astronomical Twilight End | 18:36 |
| Moon Illumination | 21.43% |