cesium修改时间轴的显示格式

        修改前：

         修改后：

 // 格式化时钟时间
  viewer.animation.viewModel.timeFormatter = function (datetime, viewModel) {
    const julianDT = new Cesium.JulianDate();
    Cesium.JulianDate.addHours(datetime, 8, julianDT);
    let gregorianDate = Cesium.JulianDate.toGregorianDate(julianDT);
    let hour = gregorianDate.hour + "";
    let minute = gregorianDate.minute + "";
    let second = gregorianDate.second + "";
    return `${hour.padStart(2, "0")}:${minute.padStart(
      2,
      "0"
    )}:${second.padStart(2, "0")}`;
  };
  // 格式化时间轴
  viewer.timeline.makeLabel = function (date, viewerModel) {
    const julianDT = new Cesium.JulianDate();
    Cesium.JulianDate.addHours(date, 8, julianDT);
    var gregorianDT = Cesium.JulianDate.toGregorianDate(julianDT);

    let hour = gregorianDT.hour + "";
    let minute = gregorianDT.minute + "";
    let second = gregorianDT.second + "";
    return `${gregorianDT.year}年${gregorianDT.month}月${
      gregorianDT.day
    }日${hour.padStart(2, "0")}:${minute.padStart(2, "0")}:${second.padStart(
      2,
      "0"
    )}`;
  };