| Geyser | 1971-03-09 |
|---|---|
| Castle | 1310 |
| Grand | 1315 |
| Old Faithful | 1230 short, 1315 long |
| Values for Old Faithful Area | 1971-03-09 |
|---|---|
| Astronomical Twilight Begin | 05:10 |
| Nautical Twilight Begin | 05:44 |
| Civil Twilight Begin | 06:18 |
| Sunrise | 06:46 |
| Sunset | 18:20 |
| Civil Twilight End | 18:49 |
| Nautical Twilight End | 19:23 |
| Astronomical Twilight End | 19:57 |
| Moon Illumination | 93.04% |