| Geyser | 1988-05-03 |
|---|---|
| Echinus | 1225 |
| Emerald Spring | 1200 |
| Fearless | 1200 |
| Green Dragon Spring | 1200 |
| Porkchop | 1200 |
| Steamboat | 1200 |
| Yellow Funnel Spring | 1200 |
| Values for Old Faithful Area | 1988-05-03 |
|---|---|
| Astronomical Twilight Begin | 04:12 |
| Nautical Twilight Begin | 04:57 |
| Civil Twilight Begin | 05:37 |
| Sunrise | 06:09 |
| Sunset | 20:30 |
| Civil Twilight End | 21:02 |
| Nautical Twilight End | 21:42 |
| Astronomical Twilight End | 22:27 |
| Moon Illumination | 98.19% |