| Geyser | 1976-02-13 |
|---|---|
| Old Faithful | 0929 long, 1036 long, 1151 short, 1259 long, 1411 long, 1519 long |
| Values for Old Faithful Area | 1976-02-13 |
|---|---|
| Astronomical Twilight Begin | 05:48 |
| Nautical Twilight Begin | 06:22 |
| Civil Twilight Begin | 06:56 |
| Sunrise | 07:26 |
| Sunset | 17:48 |
| Civil Twilight End | 18:18 |
| Nautical Twilight End | 18:52 |
| Astronomical Twilight End | 19:26 |
| Moon Illumination | 92.3% |