| Geyser | 1977-01-10 |
|---|---|
| Castle | 1509 |
| Grand | 1000 |
| Old Faithful | 0758 long, 0908 short, 0955 long, 1110 short, 1220 long, 1326 long, 1443 long, 1556 short, 1646 long, 1813 long |
| Plume | 0904, 0928, 0954 |
| Values for Old Faithful Area | 1977-01-10 |
|---|---|
| Astronomical Twilight Begin | 06:14 |
| Nautical Twilight Begin | 06:49 |
| Civil Twilight Begin | 07:25 |
| Sunrise | 07:58 |
| Sunset | 17:03 |
| Civil Twilight End | 17:36 |
| Nautical Twilight End | 18:12 |
| Astronomical Twilight End | 18:47 |
| Moon Illumination | 76.77% |