diff --git a/regress/mtime-dst.test b/regress/mtime-dstpoint.test
similarity index 100%
rename from regress/mtime-dst.test
rename to regress/mtime-dstpoint.test
diff --git a/regress/mtime-post-dstpoint-deflated.zip b/regress/mtime-post-dstpoint-deflated.zip
new file mode 100644
index 000000000..d40e14723
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diff --git a/regress/mtime-post-dstpoint.test b/regress/mtime-post-dstpoint.test
new file mode 100644
index 000000000..a4748cdaf
--- /dev/null
+++ b/regress/mtime-post-dstpoint.test
@@ -0,0 +1,5 @@
+description change method from stored to deflated, for a file one hour after DST change
+environment-set TZ America/New_York
+return 0
+arguments test.zzip  set_file_compression 0 deflate 0
+file test.zzip mtime-post-dstpoint.zip mtime-post-dstpoint-deflated.zip
diff --git a/regress/mtime-post-dstpoint.zip b/regress/mtime-post-dstpoint.zip
new file mode 100644
index 000000000..2a3e14d3d
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diff --git a/regress/mtime-pre-dstpoint-deflated.zip b/regress/mtime-pre-dstpoint-deflated.zip
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index 000000000..287fd31d5
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diff --git a/regress/mtime-pre-dstpoint.test b/regress/mtime-pre-dstpoint.test
new file mode 100644
index 000000000..3518e6e16
--- /dev/null
+++ b/regress/mtime-pre-dstpoint.test
@@ -0,0 +1,5 @@
+description change method from stored to deflated, for a file one hour before DST change
+environment-set TZ America/New_York
+return 0
+arguments test.zzip  set_file_compression 0 deflate 0
+file test.zzip mtime-pre-dstpoint.zip mtime-pre-dstpoint-deflated.zip
diff --git a/regress/mtime-pre-dstpoint.zip b/regress/mtime-pre-dstpoint.zip
new file mode 100644
index 000000000..cd096d18f
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