| Geyser | 1977-03-01 |
|---|---|
| Beehive | 0801 |
| Castle | 1324 |
| Dome | 0000-2359 |
| Grand | 0816 ie |
| Old Faithful | 0841 long, 0949 long, 1059 long, 1206 long, 1321 short, 1415, 1537 long, 1652 long |
| Plume | 0805, 0832 |
| Values for Old Faithful Area | 1977-03-01 |
|---|---|
| Astronomical Twilight Begin | 05:23 |
| Nautical Twilight Begin | 05:57 |
| Civil Twilight Begin | 06:31 |
| Sunrise | 07:00 |
| Sunset | 18:11 |
| Civil Twilight End | 18:40 |
| Nautical Twilight End | 19:13 |
| Astronomical Twilight End | 19:47 |
| Moon Illumination | 78.9% |