| Geyser | 1978-07-26 |
|---|---|
| Echinus | 0931, 1046, 1205, 1443, 1602, 1952, 2115, 2237 |
| Steamboat | 1600 |
| Whirligig | 0715, 0840 |
| Values for Old Faithful Area | 1978-07-26 |
|---|---|
| Astronomical Twilight Begin | 03:55 |
| Nautical Twilight Begin | 04:46 |
| Civil Twilight Begin | 05:29 |
| Sunrise | 06:03 |
| Sunset | 20:55 |
| Civil Twilight End | 21:29 |
| Nautical Twilight End | 22:13 |
| Astronomical Twilight End | 23:03 |
| Moon Illumination | 57.14% |