| Geyser | 1969-06-29 |
|---|---|
| Arch Steam Vent | 1200 |
| Echinus | 0815, 1115, 1412, 1455, 1618 |
| Emerald Spring | 1200 |
| Mud Spring | 1200 |
| Porkchop | 1200 |
| Steamboat | 1200 |
| Values for Old Faithful Area | 1969-06-29 |
|---|---|
| Astronomical Twilight Begin | 03:14 |
| Nautical Twilight Begin | 04:16 |
| Civil Twilight Begin | 05:04 |
| Sunrise | 05:41 |
| Sunset | 21:11 |
| Civil Twilight End | 21:48 |
| Nautical Twilight End | 22:36 |
| Astronomical Twilight End | 23:39 |
| Moon Illumination | 99.45% |