| Geyser | 1978-08-23 |
|---|---|
| Cistern Spring | 1000-1220, 1200-2320 |
| Echinus | 0942, 1109, 1236, 1402, 1527, 1653, 2237 |
| Steamboat | 0803 maj |
| Veteran | 1420 min |
| Values for Old Faithful Area | 1978-08-23 |
|---|---|
| Astronomical Twilight Begin | 04:47 |
| Nautical Twilight Begin | 05:27 |
| Civil Twilight Begin | 06:04 |
| Sunrise | 06:35 |
| Sunset | 20:16 |
| Civil Twilight End | 20:47 |
| Nautical Twilight End | 21:24 |
| Astronomical Twilight End | 22:04 |
| Moon Illumination | 72.25% |