interface DateTimeComponents {
    time: string;
    date: string;
}
interface FormatOptions extends Intl.DateTimeFormatOptions {
    locale?: string;
}
interface RelativeTimeOptions {
    format?: string;
    base?: Date;
    locale?: string;
}
declare const DEFAULT_TIMEZONE = "America/New_York";
declare const DEFAULT_DATE_FORMAT = "MM/dd/yyyy, hh:mm a, ZZZ";
declare function shortFormatDistanceToNow(date: Date): string;
declare function getDate(timezone?: string): DateTimeComponents;
declare function getWeekDay(dateTime: string | Date | number): string | null;
declare function getRelativeTime(dateTime: string | Date | number, options?: RelativeTimeOptions): string | null;
declare function formatDate(date: Date | string | number, options?: FormatOptions): string;
declare function isValidDate(date: unknown): boolean;
declare function addDays(date: Date | string | number, days: number): Date;
declare function subtractDays(date: Date | string | number, days: number): Date;
declare function isSameDay(date1: Date | string | number, date2: Date | string | number): boolean;
declare function startOfDay(date: Date | string | number): Date;
declare function endOfDay(date: Date | string | number): Date;

export { DEFAULT_DATE_FORMAT, DEFAULT_TIMEZONE, type DateTimeComponents, type FormatOptions, type RelativeTimeOptions, addDays, endOfDay, formatDate, getDate, getRelativeTime, getWeekDay, isSameDay, isValidDate, shortFormatDistanceToNow, startOfDay, subtractDays };