Assertion: nautical twilight | /r/HasProperty | followed by astronomical twilight
Facets:
value: between 12 and 18 degrees
type: OTHER
Source sentences:
text: After this phenomenon, the sun sinks below the horizon causing days of continuous civil twilight then subsequent days of nautical twilight followed by astronomical twilight.
text: Next comes nautical twilight, followed by astronomical twilight between 12 and 18 degrees, and when the sun is more than 18 degrees below the horizon, it is considered night.