declare type Options = {
    /** Use the UTC timezone */
    UTC?: boolean;
};
/**
 * Determine the start of the day for a date
 *
 * @param input The date
 * @param __namedParameters see {@link Options}
 * @default UTC false
 * @returns The date value for midnight on the specified day
 */
export declare function getBeginningOfDay(input: Date, { UTC }?: Options): Date;
export default getBeginningOfDay;