export declare const MILLISECOND = 1;
export declare const SECOND: number;
export declare const MINUTE: number;
export declare const HOUR: number;
export declare const DAY: number;
export declare const WEEK: number;
export declare const YEAR: number;
export declare const MONTH: number;
export declare const DECADE: number;
export declare const CENTURY: number;
export declare namespace session {
    function now(interval?: number): number;
}
export declare const time_zone_offset: number;