| Geyser | 1971-02-06 |
|---|---|
| Beehive | 0826 |
| Castle | 1535 |
| Depression | 0832 |
| Grand | 1157 |
| Old Faithful | 0900 short, 1004 long, 1111 long, 1218 long, 1323 long, 1444 long, 1547 long |
| Values for Old Faithful Area | 1971-02-06 |
|---|---|
| Astronomical Twilight Begin | 05:57 |
| Nautical Twilight Begin | 06:31 |
| Civil Twilight Begin | 07:05 |
| Sunrise | 07:36 |
| Sunset | 17:38 |
| Civil Twilight End | 18:09 |
| Nautical Twilight End | 18:43 |
| Astronomical Twilight End | 19:17 |
| Moon Illumination | 85.08% |