| Geyser | 1976-10-27 |
|---|---|
| Beehive | 0745 |
| Castle | 0200 ie |
| Fan and Mortar | 0921 |
| Grand | 1221 |
| Old Faithful | 0816 long, 0924, 1031 short, 1119, 1245 short, 1330 long, 1452 short, 1538 long, 1653 short |
| Values for Old Faithful Area | 1976-10-27 |
|---|---|
| Astronomical Twilight Begin | 06:16 |
| Nautical Twilight Begin | 06:50 |
| Civil Twilight Begin | 07:24 |
| Sunrise | 07:54 |
| Sunset | 18:19 |
| Civil Twilight End | 18:49 |
| Nautical Twilight End | 19:23 |
| Astronomical Twilight End | 19:57 |
| Moon Illumination | 22.19% |