| Geyser | 1971-02-28 |
|---|---|
| Beehive | 1050 |
| Old Faithful | 1027 long, 1134 short, 1248 short, 1344 long |
| Values for Old Faithful Area | 1971-02-28 |
|---|---|
| Astronomical Twilight Begin | 05:26 |
| Nautical Twilight Begin | 05:59 |
| Civil Twilight Begin | 06:33 |
| Sunrise | 07:02 |
| Sunset | 18:09 |
| Civil Twilight End | 18:38 |
| Nautical Twilight End | 19:11 |
| Astronomical Twilight End | 19:45 |
| Moon Illumination | 12.12% |