| Geyser | 1975-02-04 |
|---|---|
| Castle | 1310 ie |
| Dome | 1207, 1506 ie |
| Grand | 1139 ie |
| Lion | 1419 ie |
| Old Faithful | 0902 short, 0954 long, 1115 short, 1202 long, 1314 short, 1358 long, 1520 long, 1739 long |
| Vault | 1201 |
| Values for Old Faithful Area | 1975-02-04 |
|---|---|
| Astronomical Twilight Begin | 05:59 |
| Nautical Twilight Begin | 06:33 |
| Civil Twilight Begin | 07:07 |
| Sunrise | 07:38 |
| Sunset | 17:36 |
| Civil Twilight End | 18:06 |
| Nautical Twilight End | 18:41 |
| Astronomical Twilight End | 19:15 |
| Moon Illumination | 39.47% |