| Geyser | 1980-09-07 |
|---|---|
| Bear Den | 1357 |
| Crater Spring | 1200 |
| Dishwater Spring | 1200 |
| Echinus | 1227, 1352, 1432, 1512 |
| Mud Spring | 1200 |
| Mystic Spring | 1200 |
| Puff-n-Stuff | 1200 |
| Values for Old Faithful Area | 1980-09-07 |
|---|---|
| Astronomical Twilight Begin | 05:11 |
| Nautical Twilight Begin | 05:48 |
| Civil Twilight Begin | 06:24 |
| Sunrise | 06:53 |
| Sunset | 19:48 |
| Civil Twilight End | 20:18 |
| Nautical Twilight End | 20:53 |
| Astronomical Twilight End | 21:30 |
| Moon Illumination | 4.42% |