| Geyser | 1977-03-11 |
|---|---|
| Grand | 0900 ie |
| Old Faithful | 0903 long, 1031 long, 1138 long, 1255 long, 1411 long, 1519 short, 1613 long |
| Values for Old Faithful Area | 1977-03-11 |
|---|---|
| Astronomical Twilight Begin | 05:05 |
| Nautical Twilight Begin | 05:39 |
| Civil Twilight Begin | 06:13 |
| Sunrise | 06:42 |
| Sunset | 18:24 |
| Civil Twilight End | 18:53 |
| Nautical Twilight End | 19:26 |
| Astronomical Twilight End | 20:01 |
| Moon Illumination | 63.44% |