| Geyser | 1976-02-21 |
|---|---|
| Beehive | 1035 |
| Castle | 1334 ie |
| Depression | 1101 |
| Grand | 1334 ie |
| Old Faithful | 1037 short, 1132 long, 1240 long, 1344 long, 1501 long, 1606 long |
| Values for Old Faithful Area | 1976-02-21 |
|---|---|
| Astronomical Twilight Begin | 05:37 |
| Nautical Twilight Begin | 06:11 |
| Civil Twilight Begin | 06:45 |
| Sunrise | 07:14 |
| Sunset | 17:59 |
| Civil Twilight End | 18:28 |
| Nautical Twilight End | 19:02 |
| Astronomical Twilight End | 19:36 |
| Moon Illumination | 61.82% |