/**
 * `panchang()` — the five limbs of the Vedic day, plus sunrise, sunset,
 * Rahu Kaal, and moon phase, for one instant at one place.
 *
 * Semantics: elements (tithi, nakshatra, yoga, karana) are computed **at
 * the given instant**, not frozen at sunrise. The vaar follows the vedic
 * sunrise-to-sunrise day; sunrise/sunset/Rahu Kaal belong to the instant's
 * local calendar date in `timezone`.
 */
import { type MoonPhase } from '@grahan/core';
import { type Karana } from './karana.js';
import { type Nakshatra } from './nakshatra.js';
import { type RahuKaalWindow } from './rahuKaal.js';
import { type Tithi } from './tithi.js';
import { type Vaar } from './vaar.js';
import { type Yoga } from './yoga.js';
export interface PanchangOptions {
    /** The instant to compute for (a JS Date is always an exact UTC instant). */
    date: Date;
    /** Degrees north-positive. */
    latitude: number;
    /** Degrees east-positive. */
    longitude: number;
    /** IANA zone that defines the local calendar date, e.g. "Asia/Kathmandu". */
    timezone: string;
}
export interface Panchang {
    vaar: Vaar;
    tithi: Tithi;
    nakshatra: Nakshatra;
    yoga: Yoga;
    karana: Karana;
    /** 'normal' days have sunrise/sunset; polar days/nights do not. */
    daylight: 'normal' | 'always-up' | 'always-down';
    /** Local-date sunrise, or null on polar days/nights. */
    sunrise: Date | null;
    sunset: Date | null;
    /** Weekday-indexed eighth of daylight; null when there is no daylight cycle. */
    rahuKaal: RahuKaalWindow | null;
    moonPhase: MoonPhase;
}
/**
 * Compute the panchang for an instant at a location.
 *
 * @example
 * ```ts
 * const p = panchang({
 *   date: new Date('1993-08-18T05:15:00Z'), // 11:00 NPT
 *   latitude: 27.0104,
 *   longitude: 84.8821,
 *   timezone: 'Asia/Kathmandu',
 * });
 * // p.tithi   → { index: 0, paksha: 'shukla', name: 'Pratipada' }
 * // p.nakshatra → { index: 9, name: 'Magha', pada: 3 }
 * // p.vaar.name → 'Wednesday'
 * ```
 */
export declare function panchang(options: PanchangOptions): Panchang;
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