| Geyser | 1977-01-19 |
|---|---|
| Castle | 1653 |
| Depression | 1009, 1518 |
| Grand | 1420 |
| Old Faithful | 0856 long, 1008 short, 1056 long, 1210 short, 1324, 1430 long, 1543 long, 1650 long, 1759 |
| Plume | 1008, 1034, 1057 |
| Values for Old Faithful Area | 1977-01-19 |
|---|---|
| Astronomical Twilight Begin | 06:11 |
| Nautical Twilight Begin | 06:45 |
| Civil Twilight Begin | 07:21 |
| Sunrise | 07:53 |
| Sunset | 17:14 |
| Civil Twilight End | 17:46 |
| Nautical Twilight End | 18:22 |
| Astronomical Twilight End | 18:57 |
| Moon Illumination | 0.11% |