| Geyser | 1972-05-04 |
|---|---|
| Beehive | 1325 |
| Grand | 1500 |
| Old Faithful | 0844 long, 0959, 1106 long, 1218 long, 1304 long, 1423 long, 1527 long, 1642 long |
| Riverside | 1525 |
| Values for Old Faithful Area | 1972-05-04 |
|---|---|
| Astronomical Twilight Begin | 04:10 |
| Nautical Twilight Begin | 04:56 |
| Civil Twilight Begin | 05:36 |
| Sunrise | 06:08 |
| Sunset | 20:31 |
| Civil Twilight End | 21:03 |
| Nautical Twilight End | 21:43 |
| Astronomical Twilight End | 22:29 |
| Moon Illumination | 72.47% |