| Geyser | 1970-05-23 |
|---|---|
| Castle | 1745 |
| Old Faithful | 0752 short, 0857 long, 1007 short, 1053 long, 1209 short, 1300 long, 1412 short, 1500 long, 1614 short, 1659 |
| Riverside | 1140, 1800 |
| Values for Old Faithful Area | 1970-05-23 |
|---|---|
| Astronomical Twilight Begin | 03:34 |
| Nautical Twilight Begin | 04:28 |
| Civil Twilight Begin | 05:13 |
| Sunrise | 05:47 |
| Sunset | 20:52 |
| Civil Twilight End | 21:26 |
| Nautical Twilight End | 22:11 |
| Astronomical Twilight End | 23:05 |
| Moon Illumination | 94.34% |