| Geyser | 1977-01-26 |
|---|---|
| Beehive | 1315 |
| Castle | 1230 |
| Little Squirt | 1230 |
| Old Faithful | 0858 long, 1014 long, 1134 long, 1234 long, 1359 long, 1506 short, 1556 long |
| Values for Old Faithful Area | 1977-01-26 |
|---|---|
| Astronomical Twilight Begin | 06:06 |
| Nautical Twilight Begin | 06:41 |
| Civil Twilight Begin | 07:16 |
| Sunrise | 07:47 |
| Sunset | 17:24 |
| Civil Twilight End | 17:55 |
| Nautical Twilight End | 18:30 |
| Astronomical Twilight End | 19:05 |
| Moon Illumination | 41.25% |