| Geyser | 1971-05-05 |
|---|---|
| Beehive | 1109 |
| Castle | 1631 |
| Old Faithful | 0910 short, 0954 short, 1112 short, 1202 long, 1317 short, 1405 long, 1525 short, 1607 long |
| Riverside | 1710 |
| Values for Old Faithful Area | 1971-05-05 |
|---|---|
| Astronomical Twilight Begin | 04:10 |
| Nautical Twilight Begin | 04:55 |
| Civil Twilight Begin | 05:36 |
| Sunrise | 06:08 |
| Sunset | 20:31 |
| Civil Twilight End | 21:03 |
| Nautical Twilight End | 21:44 |
| Astronomical Twilight End | 22:29 |
| Moon Illumination | 76.55% |