export declare class DateHelper {
    static readonly firstTimestampSeparator = "T";
    static readonly lastTimestampSeparator = "Z";
    static readonly MsInSecond = 1000;
    static readonly SecondsInMinute = 60;
    static readonly MinutesInHour = 60;
    static readonly HoursInDay = 24;
    static readonly DaysInWeek = 7;
    static readonly DaysInHalfYear = 180;
    static readonly DaysInYearQuarter: number;
    static readonly DaysInMonth = 30;
    static readonly MsInMinute: number;
    static readonly MsInHour: number;
    static readonly MsInDay: number;
    static readonly SecondsInHour: number;
    static readonly SecondsInDay: number;
    static readonly secondsToMs: (seconds: number) => number;
    static readonly nsToMs: (ns: number) => number;
    static readonly msToSeconds: (ms: number) => number;
    static readonly getFullTime: (timestamp: number | string | Date) => string;
    static readonly fromUTCMsToLocalMs: (ms: number) => number;
    static readonly getUTCMs: (ms: number) => number;
}