| Geyser | 1976-02-15 |
|---|---|
| Old Faithful | 0859 long, 1003 long, 1125 long, 1241 short, 1328 long, 1503 short, 1551 long |
| Values for Old Faithful Area | 1976-02-15 |
|---|---|
| Astronomical Twilight Begin | 05:46 |
| Nautical Twilight Begin | 06:20 |
| Civil Twilight Begin | 06:54 |
| Sunrise | 07:23 |
| Sunset | 17:51 |
| Civil Twilight End | 18:20 |
| Nautical Twilight End | 18:55 |
| Astronomical Twilight End | 19:28 |
| Moon Illumination | 99.75% |