| Geyser | 1976-12-25 |
|---|---|
| Beehive | 1225 |
| Castle | 1242 ie |
| Old Faithful | 0850 short, 0950 long, 1110 long, 1225 long, 1334 long, 1500 long, 1614 long |
| Riverside | 1130 |
| Rocket | 1130, 1240 |
| Values for Old Faithful Area | 1976-12-25 |
|---|---|
| Astronomical Twilight Begin | 06:12 |
| Nautical Twilight Begin | 06:48 |
| Civil Twilight Begin | 07:25 |
| Sunrise | 07:58 |
| Sunset | 16:49 |
| Civil Twilight End | 17:22 |
| Nautical Twilight End | 17:59 |
| Astronomical Twilight End | 18:34 |
| Moon Illumination | 21.24% |