| Geyser | 1964-09-28 |
|---|---|
| Echinus | 0935, 1039, 1142, 1246, 1348, 1450, 1552 |
| Ledge | 1800 |
| Pinto | 1800 |
| Steamboat | 0900-1630 |
| Veteran | 1330 ie |
| Values for Old Faithful Area | 1964-09-28 |
|---|---|
| Astronomical Twilight Begin | 04:40 |
| Nautical Twilight Begin | 05:15 |
| Civil Twilight Begin | 05:49 |
| Sunrise | 06:17 |
| Sunset | 18:09 |
| Civil Twilight End | 18:38 |
| Nautical Twilight End | 19:12 |
| Astronomical Twilight End | 19:46 |
| Moon Illumination | 53.89% |