| Geyser | 1975-01-04 |
|---|---|
| Beehive | 1020 |
| Daisy | 1600 |
| Old Faithful | 0944 short, 1041 long, 1152 short, 1242 long, 1403 short, 1444 long, 1558 short, 1649 long |
| Riverside | 1105 |
| Splendid | 1600 |
| Values for Old Faithful Area | 1975-01-04 |
|---|---|
| Astronomical Twilight Begin | 06:14 |
| Nautical Twilight Begin | 06:50 |
| Civil Twilight Begin | 07:26 |
| Sunrise | 07:59 |
| Sunset | 16:56 |
| Civil Twilight End | 17:29 |
| Nautical Twilight End | 18:06 |
| Astronomical Twilight End | 18:41 |
| Moon Illumination | 55.85% |