import { Waypoint } from './waypoint.types.js';
/**
 * Determines if a given time is during daylight at the specified waypoint.
 *
 * @param waypoint - The waypoint to check for daylight
 * @param time - The time to check (defaults to current time)
 * @returns true if the specified time is during daylight (between sunrise and sunset)
 */
export declare function isDaylight(waypoint: Waypoint, time?: Date): boolean;
/**
 * Determines if a given time is during night at the specified waypoint.
 * Night is defined as the period between the end of evening civil twilight and the beginning of morning civil twilight.
 *
 * @param waypoint - The waypoint to check for night conditions
 * @param time - The time to check (defaults to current time)
 * @returns true if the specified time is during night
 */
export declare function isNight(waypoint: Waypoint, time?: Date): boolean;