| Geyser | 1972-05-21 |
|---|---|
| Beehive | 1220 |
| Castle | 1215 |
| Lion | 0832, 1012, 1335 |
| Old Faithful | 0908 short, 0953 long, 1110 long, 1213 long, 1325 short, 1416 long, 1528 short, 1639 long, 1748 short |
| Values for Old Faithful Area | 1972-05-21 |
|---|---|
| Astronomical Twilight Begin | 03:37 |
| Nautical Twilight Begin | 04:30 |
| Civil Twilight Begin | 05:14 |
| Sunrise | 05:49 |
| Sunset | 20:50 |
| Civil Twilight End | 21:25 |
| Nautical Twilight End | 22:09 |
| Astronomical Twilight End | 23:02 |
| Moon Illumination | 61.86% |