| Geyser | 1976-10-03 |
|---|---|
| Castle | 0911 |
| Grand | 0730 ie, 1459 |
| Great Fountain | 1528 |
| Oblong | 1609 |
| Old Faithful | 0839 long, 0950 short, 1050 long, 1205 short, 1323 long, 1433 long, 1554 long, 1706 long |
| Riverside | 1200, 1800 |
| Values for Old Faithful Area | 1976-10-03 |
|---|---|
| Astronomical Twilight Begin | 05:47 |
| Nautical Twilight Begin | 06:21 |
| Civil Twilight Begin | 06:55 |
| Sunrise | 07:24 |
| Sunset | 19:00 |
| Civil Twilight End | 19:29 |
| Nautical Twilight End | 20:02 |
| Astronomical Twilight End | 20:36 |
| Moon Illumination | 77.85% |