| Geyser | 1977-02-28 |
|---|---|
| Beehive | 1140 |
| Old Faithful | 0759 long, 0906 short, 1000 long, 1114 long, 1236 long, 1351 short, 1440 long, 1556 long, 1706 long, 1818 long, 1942 long |
| Values for Old Faithful Area | 1977-02-28 |
|---|---|
| Astronomical Twilight Begin | 05:25 |
| Nautical Twilight Begin | 05:59 |
| Civil Twilight Begin | 06:32 |
| Sunrise | 07:01 |
| Sunset | 18:09 |
| Civil Twilight End | 18:38 |
| Nautical Twilight End | 19:12 |
| Astronomical Twilight End | 19:46 |
| Moon Illumination | 70.32% |