| Geyser | 1965-07-27 |
|---|---|
| Blue | 0900 |
| Echinus | 0815, 0931, 1051, 1211, 1332, 1451, 1611 |
| Ledge | 0000 A, 0800 |
| Little Whirligig | 0915 ie, 1100 ie, 1248, 1522, 1723 ie |
| Splutter Pot | 1730 |
| Whirligig | 1800 |
| Values for Old Faithful Area | 1965-07-27 |
|---|---|
| Astronomical Twilight Begin | 03:57 |
| Nautical Twilight Begin | 04:47 |
| Civil Twilight Begin | 05:30 |
| Sunrise | 06:04 |
| Sunset | 20:54 |
| Civil Twilight End | 21:28 |
| Nautical Twilight End | 22:11 |
| Astronomical Twilight End | 23:01 |
| Moon Illumination | 2.35% |