| Geyser | 1964-07-30 |
|---|---|
| Echinus | 0730, 0852, 1017, 1142, 1305, 1438, 1723 |
| Steamboat | 1400 |
| Valentine | 0000 A |
| Values for Old Faithful Area | 1964-07-30 |
|---|---|
| Astronomical Twilight Begin | 03:03 |
| Nautical Twilight Begin | 03:52 |
| Civil Twilight Begin | 04:34 |
| Sunrise | 05:08 |
| Sunset | 19:51 |
| Civil Twilight End | 20:24 |
| Nautical Twilight End | 21:06 |
| Astronomical Twilight End | 21:55 |
| Moon Illumination | 70% |