| Geyser | 1964-07-24 |
|---|---|
| Arsenic | 1040 |
| Echinus | 0747, 0914, 1042, 1210, 1335, 1506, 1635, 1805 |
| Fireball | 1040 |
| Guardian | 1154 |
| Pinwheel | 1120, 1300, 1330, 1708 |
| Steamboat | 0725 |
| Valentine | 0000 A |
| Values for Old Faithful Area | 1964-07-24 |
|---|---|
| Astronomical Twilight Begin | 02:52 |
| Nautical Twilight Begin | 03:44 |
| Civil Twilight Begin | 04:27 |
| Sunrise | 05:01 |
| Sunset | 19:57 |
| Civil Twilight End | 20:31 |
| Nautical Twilight End | 21:15 |
| Astronomical Twilight End | 22:06 |
| Moon Illumination | 99.87% |