| Geyser | 1976-10-17 |
|---|---|
| Beehive | 1613 ie |
| Grand | 0915 ie, 1600 |
| Old Faithful | 0747, 0905 short, 1028 long, 1130 short, 1220 long, 1342 short, 1434 long, 1603 short, 1752 long |
| Values for Old Faithful Area | 1976-10-17 |
|---|---|
| Astronomical Twilight Begin | 06:04 |
| Nautical Twilight Begin | 06:38 |
| Civil Twilight Begin | 07:12 |
| Sunrise | 07:41 |
| Sunset | 18:35 |
| Civil Twilight End | 19:04 |
| Nautical Twilight End | 19:38 |
| Astronomical Twilight End | 20:12 |
| Moon Illumination | 40.92% |