| Geyser | 1977-01-18 |
|---|---|
| Depression | 1723 |
| Giantess | 1018, 1452 |
| Old Faithful | 0900 long, 1017 short, 1103 long, 1230 long, 1335 long, 1501 short, 1556 long, 1719, 1823 |
| Plume | 1025, 1051 |
| Vault | 1011 ie |
| Values for Old Faithful Area | 1977-01-18 |
|---|---|
| Astronomical Twilight Begin | 06:11 |
| Nautical Twilight Begin | 06:46 |
| Civil Twilight Begin | 07:22 |
| Sunrise | 07:54 |
| Sunset | 17:13 |
| Civil Twilight End | 17:45 |
| Nautical Twilight End | 18:21 |
| Astronomical Twilight End | 18:55 |
| Moon Illumination | 2.22% |