| Geyser | 1973-05-22 |
|---|---|
| Beehive | 0842, 1903 ie |
| Castle | 0337 |
| Daisy | 1345, 1610 |
| Grand | 0355, 0835 |
| Old Faithful | 0847, 1003, 1053, 1204, 1317, 1407, 1521, 1605, 1722, 1813, 1930 |
| Riverside | 1450 |
| Valentine | 1400 A |
| Values for Old Faithful Area | 1973-05-22 |
|---|---|
| Astronomical Twilight Begin | 03:36 |
| Nautical Twilight Begin | 04:29 |
| Civil Twilight Begin | 05:13 |
| Sunrise | 05:48 |
| Sunset | 20:51 |
| Civil Twilight End | 21:25 |
| Nautical Twilight End | 22:10 |
| Astronomical Twilight End | 23:03 |
| Moon Illumination | 78.68% |