| Geyser | 1977-03-17 |
|---|---|
| Castle | 1348 ie |
| Daisy | 1429 |
| Grand | 1520 ie |
| Old Faithful | 0847 short, 0930 long, 1045 long, 1203 long, 1310 long, 1431 long, 1542 short, 1636 long |
| Splendid | 1429 |
| Values for Old Faithful Area | 1977-03-17 |
|---|---|
| Astronomical Twilight Begin | 04:53 |
| Nautical Twilight Begin | 05:28 |
| Civil Twilight Begin | 06:02 |
| Sunrise | 06:31 |
| Sunset | 18:31 |
| Civil Twilight End | 19:00 |
| Nautical Twilight End | 19:34 |
| Astronomical Twilight End | 20:09 |
| Moon Illumination | 6.47% |