iailab-module-data/iailab-module-data-biz/src/main/java/com/iailab/module/data/point/common/PointCumulateUnitEnum.java

@@ -67,7 +67,7 @@
            }
        }

        Calendar startCal = unit.calculate(endTime, length);
        Calendar startCal = unit.calculate(endTime, length-1);
        return startCal.getTime();
    }
}