| Geyser | 1972-10-21 |
|---|---|
| Beehive | 1522 |
| Castle | 1108 |
| Depression | 1320 |
| Old Faithful | 0905, 1006, 1117, 1227, 1317, 1428, 1531, 1655, 1801 |
| Values for Old Faithful Area | 1972-10-21 |
|---|---|
| Astronomical Twilight Begin | 06:09 |
| Nautical Twilight Begin | 06:43 |
| Civil Twilight Begin | 07:17 |
| Sunrise | 07:46 |
| Sunset | 18:29 |
| Civil Twilight End | 18:58 |
| Nautical Twilight End | 19:32 |
| Astronomical Twilight End | 20:06 |
| Moon Illumination | 97.45% |