Statements (12)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
astronomer
|
| gptkbp:defines |
period when the Sun stays below the nautical twilight angle for more than 24 hours
|
| gptkbp:distinción |
gptkb:astronomical_polar_night
gptkb:civil_polar_night |
| gptkbp:duration |
varies by latitude
|
| https://www.w3.org/2000/01/rdf-schema#label |
nautical polar night
|
| gptkbp:nautical_twilight_angle |
12 degrees below the horizon
|
| gptkbp:occurredIn |
winter
polar regions |
| gptkbp:type |
polar night
|
| gptkbp:bfsParent |
gptkb:Polar_night
|
| gptkbp:bfsLayer |
7
|