columnItem.getDataLength() + 1

 iailab-module-model/iailab-module-model-biz/src/main/java/com/iailab/module/model/mdk/sample/SampleInfoConstructor.java

@@ -124,7 +124,7 @@
                break;
            case NORMALITEM:
            case MERGEITEM:
                dateTime = calculateTime(originalTime, false, columnItem.getDataLength(), columnItem.getGranularity());
                dateTime = calculateTime(originalTime, false, columnItem.getDataLength() + 1, columnItem.getGranularity());
                break;
            default:
                break;