| Geyser | 1974-08-28 |
|---|---|
| Africa | 1800 |
| Bear Den | 1602 |
| Constant | 1840 |
| Echinus | 0908, 1020, 1132, 1243, 1354, 1504, 1615 |
| Little Whirligig | 1102, 1840 |
| Pinwheel | 1350 |
| Whirligig | 1058 |
| Values for Old Faithful Area | 1974-08-28 |
|---|---|
| Astronomical Twilight Begin | 04:55 |
| Nautical Twilight Begin | 05:34 |
| Civil Twilight Begin | 06:10 |
| Sunrise | 06:41 |
| Sunset | 20:07 |
| Civil Twilight End | 20:38 |
| Nautical Twilight End | 21:14 |
| Astronomical Twilight End | 21:53 |
| Moon Illumination | 82.26% |