| Geyser | 1978-08-30 |
|---|---|
| Cistern Spring | 1130 |
| Echinus | 0841, 1005, 1125 ie, 1413, 1536, 2232 |
| Emerald Spring | 2210 |
| Steamboat | 1120 |
| Values for Old Faithful Area | 1978-08-30 |
|---|---|
| Astronomical Twilight Begin | 04:58 |
| Nautical Twilight Begin | 05:37 |
| Civil Twilight Begin | 06:13 |
| Sunrise | 06:43 |
| Sunset | 20:04 |
| Civil Twilight End | 20:34 |
| Nautical Twilight End | 21:10 |
| Astronomical Twilight End | 21:49 |
| Moon Illumination | 10.63% |