| Geyser | 1971-05-04 |
|---|---|
| Beehive | 1117 |
| Castle | 1450 |
| Lion | 0822 |
| Old Faithful | 0903 short, 1013 long, 1126 long, 1353 long, 1507 long, 1615 short |
| Values for Old Faithful Area | 1971-05-04 |
|---|---|
| Astronomical Twilight Begin | 04:12 |
| Nautical Twilight Begin | 04:57 |
| Civil Twilight Begin | 05:37 |
| Sunrise | 06:09 |
| Sunset | 20:30 |
| Civil Twilight End | 21:02 |
| Nautical Twilight End | 21:42 |
| Astronomical Twilight End | 22:27 |
| Moon Illumination | 68.08% |