| Geyser | 1973-04-24 |
|---|---|
| Africa | 1800 |
| Bear Den | 1107, 1240, 1412, 1500 |
| Constant | 1126, 1158 |
| Ledge | 1640 |
| Valentine | 1213 |
| Values for Old Faithful Area | 1973-04-24 |
|---|---|
| Astronomical Twilight Begin | 03:32 |
| Nautical Twilight Begin | 04:14 |
| Civil Twilight Begin | 04:52 |
| Sunrise | 05:23 |
| Sunset | 19:18 |
| Civil Twilight End | 19:49 |
| Nautical Twilight End | 20:28 |
| Astronomical Twilight End | 21:10 |
| Moon Illumination | 63.82% |