| Geyser | 1967-06-30 |
|---|---|
| Arsenic | 1738 |
| Bear Den | 0930 |
| Blue | 0900, 1250 ie, 1400 ie, 1600-1745 |
| Echinus | 0858, 0950, 1042, 1133, 1225, 1317, 1408, 1459, 1552, 1643 |
| Steamboat | 0800 |
| Values for Old Faithful Area | 1967-06-30 |
|---|---|
| Astronomical Twilight Begin | 03:14 |
| Nautical Twilight Begin | 04:16 |
| Civil Twilight Begin | 05:05 |
| Sunrise | 05:41 |
| Sunset | 21:11 |
| Civil Twilight End | 21:48 |
| Nautical Twilight End | 22:36 |
| Astronomical Twilight End | 23:38 |
| Moon Illumination | 45.65% |