import { Tempo } from '@magmacomputing/tempo';
declare module '@magmacomputing/tempo' {
    interface TempoTermRegistry {
        astro: 'Vernal' | 'Summer' | 'Autumnal' | 'Winter';
        astronomy: {
            key: 'Vernal' | 'Summer' | 'Autumnal' | 'Winter';
            strict: 'Vernal' | 'Summer' | 'Autumnal' | 'Winter';
            season: 'Spring' | 'Summer' | 'Autumn' | 'Winter';
            sphere: Tempo.COMPASS;
            event: 'Equinox' | 'Solstice';
            group: 'astronomy';
            year: number;
            month: number;
            day: number;
            hour: number;
            minute: number;
            second: number;
            millisecond: number;
            microsecond: number;
            nanosecond: number;
            start: Tempo;
            end: Tempo;
        };
    }
}
/**
 * Exposes precise astronomical calculations (equinoxes and solstices)
 * as a standard Tempo scope.
 */
export declare const AstroTerm: {
    key: string;
    scope: string;
    description: string;
    resolve(this: Tempo, anchor?: any): any[];
    define(this: Tempo, keyOnly?: boolean, anchor?: any): any;
};