| Geyser | 1976-02-16 |
|---|---|
| Grand | 1530 |
| Old Faithful | 0943 long, 1102 long, 1216 short, 1301 long, 1424 long, 1532 long |
| Values for Old Faithful Area | 1976-02-16 |
|---|---|
| Astronomical Twilight Begin | 05:44 |
| Nautical Twilight Begin | 06:18 |
| Civil Twilight Begin | 06:52 |
| Sunrise | 07:22 |
| Sunset | 17:52 |
| Civil Twilight End | 18:22 |
| Nautical Twilight End | 18:56 |
| Astronomical Twilight End | 19:29 |
| Moon Illumination | 99.51% |