| Geyser | 1984-07-18 |
|---|---|
| Dabble | 1200 |
| Mud Spring | 1200 |
| Pearl | 1200 |
| Porkchop | 1200, 1457 |
| Steamvalve Spring | 1200 |
| UNNG-NBK-8 | 1200 |
| Vixen | 1200, 1456 |
| Values for Old Faithful Area | 1984-07-18 |
|---|---|
| Astronomical Twilight Begin | 03:41 |
| Nautical Twilight Begin | 04:36 |
| Civil Twilight Begin | 05:21 |
| Sunrise | 05:56 |
| Sunset | 21:03 |
| Civil Twilight End | 21:37 |
| Nautical Twilight End | 22:22 |
| Astronomical Twilight End | 23:17 |
| Moon Illumination | 76.43% |