| Geyser | 1974-05-22 |
|---|---|
| Dark Cavern | 1800 |
| Echinus | 1601 |
| Harding | 1430 |
| Ledge | 1440 |
| Valentine | 1700 A |
| Veteran | 1636 |
| Values for Old Faithful Area | 1974-05-22 |
|---|---|
| Astronomical Twilight Begin | 03:36 |
| Nautical Twilight Begin | 04:29 |
| Civil Twilight Begin | 05:14 |
| Sunrise | 05:48 |
| Sunset | 20:51 |
| Civil Twilight End | 21:25 |
| Nautical Twilight End | 22:10 |
| Astronomical Twilight End | 23:03 |
| Moon Illumination | 0.2% |