| Geyser | 1975-02-26 |
|---|---|
| Castle | 0300 ie |
| Old Faithful | 0915 long, 1020 short, 1118 long, 1237 short, 1321 long, 1430 short, 1527 long, 1700 long, 1805 long, 1909 long |
| Riverside | 1154 |
| Values for Old Faithful Area | 1975-02-26 |
|---|---|
| Astronomical Twilight Begin | 06:29 |
| Nautical Twilight Begin | 07:03 |
| Civil Twilight Begin | 07:36 |
| Sunrise | 08:06 |
| Sunset | 19:06 |
| Civil Twilight End | 19:35 |
| Nautical Twilight End | 20:09 |
| Astronomical Twilight End | 20:43 |
| Moon Illumination | 99.94% |