| Geyser | 1975-05-23 |
|---|---|
| Beehive | 0655, 1729 |
| Beehive's Indicator | 1709 ie |
| Grand | 1432 ie |
| Great Fountain | 1440 |
| Old Faithful | 0603 short, 0651 long, 0814 short, 0858 long |
| Riverside | 1545 |
| Round | 0926 |
| White Dome | 1215 |
| Values for Old Faithful Area | 1975-05-23 |
|---|---|
| Astronomical Twilight Begin | 03:35 |
| Nautical Twilight Begin | 04:28 |
| Civil Twilight Begin | 05:13 |
| Sunrise | 05:48 |
| Sunset | 20:51 |
| Civil Twilight End | 21:26 |
| Nautical Twilight End | 22:11 |
| Astronomical Twilight End | 23:04 |
| Moon Illumination | 94.94% |