| Geyser | 1977-02-26 |
|---|---|
| Castle | 1343 ie |
| Lion | 1120 ie, 1327 ie, 1402 ie, 1448 |
| Old Faithful | 0903 long, 1011 long, 1123, 1242, 1332 long, 1455 short, 1544 long, 1656, 1813 long |
| Riverside | 1030 |
| Values for Old Faithful Area | 1977-02-26 |
|---|---|
| Astronomical Twilight Begin | 05:28 |
| Nautical Twilight Begin | 06:02 |
| Civil Twilight Begin | 06:36 |
| Sunrise | 07:05 |
| Sunset | 18:07 |
| Civil Twilight End | 18:36 |
| Nautical Twilight End | 19:10 |
| Astronomical Twilight End | 19:43 |
| Moon Illumination | 51.73% |