export interface DateAndTimeResult {
    date: Date;
    laterTime: string;
    time: string;
}
export declare const getDateAndTime: (date: Date, timeZone?: string) => DateAndTimeResult;
export declare const convertToTimestamp: (date: Date, time: string, timezone: string, offset?: 1 | -1, referenceTimezone?: string) => number;
export declare const calculateEndTime: (startTime: number, duration: number) => number;
export declare function getTimezoneOffset(targetTimezone: string, referenceTimezone?: string): number;