diff --git a/src/testcases/org/apache/poi/hssf/data/1900DateWindowing.xls b/src/testcases/org/apache/poi/hssf/data/1900DateWindowing.xls index e6d966456..33a57732e 100644 Binary files a/src/testcases/org/apache/poi/hssf/data/1900DateWindowing.xls and b/src/testcases/org/apache/poi/hssf/data/1900DateWindowing.xls differ diff --git a/src/testcases/org/apache/poi/hssf/data/1904DateWindowing.xls b/src/testcases/org/apache/poi/hssf/data/1904DateWindowing.xls index 142d3148f..7eda89e73 100644 Binary files a/src/testcases/org/apache/poi/hssf/data/1904DateWindowing.xls and b/src/testcases/org/apache/poi/hssf/data/1904DateWindowing.xls differ