/**
 * Copyright (C) Paul Sarando
 * Distributed under the Eclipse Public License (http://www.eclipse.org/legal/epl-v10.html).
 */
declare const GREGORIAN_DAYS_PER_4_YEARS: number;
declare const GREGORIAN_DAYS_PER_100_YEARS: number;
declare const GREGORIAN_DAYS_PER_400_YEARS: number;
declare const GONDOR_DAYS_PER_4_YEARS: number;
declare const GONDOR_DAYS_PER_100_YEARS: number;
declare const GONDOR_DAYS_PER_1000_YEARS: number;
declare const SECOND_AGE_TOTAL_DAYS: number;
declare const THIRD_AGE_2059_TOTAL_DAYS: number;
declare const THIRD_AGE_2360_TOTAL_DAYS: number;
/**
 * @param {number} year
 * @return {boolean} True if the given year is a Gregorian leap-year.
 */
declare const isLeapYear: (year: number) => boolean;
/**
 * @param {Date} fromDate - The starting Date (e.g. first New Year's Day)
 * @param {Date} toDate - The end Date (e.g. today)
 * @return {number} The total number of whole days elapsed.
 */
declare const toDaysElapsed: (fromDate: Date, toDate: Date) => number;
/**
 * @property year - The current year (including 0).
 * @property daysRemainder - The number of days elapsed since the current New Year's Day.
 */
interface YearWithRemainder {
    year: number;
    daysRemainder: number;
}
/**
 * @param {number} daysElapsed - The total number of whole days elapsed since the first New Year Date.
 * @return {YearWithRemainder} The current Gregorian year for the given `daysElapsed`.
 */
declare const daysElapsedToGregorianYear: (daysElapsed: number) => YearWithRemainder;
/**
 * @param {Date} today
 * @param {Date} startDate - The first New Year's Day (e.g. 1/1/1 12:00AM)
 * @param {number} daysSinceNewYearsDay - The number of whole days elapsed since today's New Year's Day.
 * @return {Date} The New Year Date for the year of the given `today`.
 */
declare const getNewYearDate: (startDate: Date, today: Date, daysSinceNewYearsDay: number) => Date;
/**
 * @param {number} daysElapsed - The total number of whole days elapsed since the first New Year Date.
 * @param {number} daysSinceNewYearsDay - The number of whole days elapsed since the current New Year's Day.
 * @param {number} daysPerWeek - The number of days in a week.
 * @return {number} The current day of the week.
 */
declare const getWeekDay: (daysElapsed: number, daysSinceNewYearsDay: number, daysPerWeek: number) => number;
/**
 * @param {number} daysElapsed - The total number of whole days elapsed since the first New Year Date.
 * @return {YearWithRemainder} The current Gondor (S.A.) year for the given `daysElapsed`.
 */
declare const daysElapsedToSecondAgeYear: (daysElapsed: number) => YearWithRemainder;
/**
 * @param {(daysElapsedToGregorianYear|daysElapsedToSecondAgeYear)} getYearWithRemainder
 * @param {number} daysElapsed - The total number of whole days elapsed since the first New Year Date.
 * @return {YearWithRemainder} The current Gondor (S.A.) year, with daysRemainder since the current New Reckoning
 *                             New Year's Day.
 */
declare const daysElapsedToNewReckoningYear: (getYearWithRemainder: (daysElapsed: number) => YearWithRemainder, daysElapsed: number) => YearWithRemainder;
/**
 * @param {Date} date1
 * @param {Date} date2
 * @return {boolean} True if the given dates have the same year, month, and date.
 */
declare const datesMatch: (date1: Date, date2: Date) => boolean;
/**
 * @param {number} fullYear
 * @param {number} month
 * @param {number} day
 * @return {Date} - A Date at midnight for the given year/month/day.
 */
declare const fullYearDate: (fullYear: number, month: number, day: number) => Date;
/**
 *
 * @param today
 * @returns yesterday - A new Date instance that is 1 day before the given `today`.
 */
declare const getPrevDate: (today: Date) => Date;
/**
 * @param today
 * @returns tomorrow - A new Date instance that is 1 day after the given `today`.
 */
declare const getNextDate: (today: Date) => Date;
/**
 * @property day - The number of the day of the month, if this date is not intercalary; otherwise, the name of the intercalary date.
 * @property month - The month index.
 * @property weekDay - The weekday index.
 * @property gregorian - The corresponding Gregorian date.
 */
interface CalendarDate {
    day: number | string;
    month: number;
    weekDay: number;
    gregorian: Date;
}
/**
 * @property year - The current year.
 * @property dates - The dates of this calendar year.
 * @property today - The given Gregorian Date this calendar year was generated from.
 */
interface Calendar {
    year: number;
    dates: CalendarDate[];
    today: Date;
}
declare const getFirstDate: (calendar: Calendar) => CalendarDate;
declare const getLastDate: (calendar: Calendar) => CalendarDate;
declare const getFirstDay: (calendar: Calendar) => Date;
declare const getLastDay: (calendar: Calendar) => Date;
export { GREGORIAN_DAYS_PER_4_YEARS, GREGORIAN_DAYS_PER_100_YEARS, GREGORIAN_DAYS_PER_400_YEARS, GONDOR_DAYS_PER_4_YEARS, GONDOR_DAYS_PER_100_YEARS, GONDOR_DAYS_PER_1000_YEARS, SECOND_AGE_TOTAL_DAYS, THIRD_AGE_2059_TOTAL_DAYS, THIRD_AGE_2360_TOTAL_DAYS, Calendar, CalendarDate, YearWithRemainder, toDaysElapsed, daysElapsedToGregorianYear, daysElapsedToSecondAgeYear, daysElapsedToNewReckoningYear, getNewYearDate, getWeekDay, isLeapYear, datesMatch, fullYearDate, getNextDate, getPrevDate, getFirstDate, getLastDate, getFirstDay, getLastDay, };