diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..f5f2790
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,3 @@
+{
+    "python.pythonPath": "D:\\Programs\\Anaconda2\\envs\\dev\\python.exe"
+}
\ No newline at end of file
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 90f7c9e..e8e585c 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,6 +1,10 @@
 =========
 CHANGELOG
 =========
+0.2.9
+-----
+Fixed issue with end of timestamp writing to dss files for "PER-*" data type
+
 0.2.8
 -----
 Recompiled heclib in linux with latest compilers to resolve issue 8
diff --git a/pyhecdss/__init__.py b/pyhecdss/__init__.py
index 65c756c..b4f1427 100644
--- a/pyhecdss/__init__.py
+++ b/pyhecdss/__init__.py
@@ -1,4 +1,4 @@
 __author__ = """Nicky Sandhu"""
 __email__ = 'psandhu@water.ca.gov'
-__version__ = "0.2.8"
+__version__ = "0.2.9"
 from .pyhecdss import *
diff --git a/pyhecdss/pyhecdss.py b/pyhecdss/pyhecdss.py
index e08b7b4..fc1bb2c 100755
--- a/pyhecdss/pyhecdss.py
+++ b/pyhecdss/pyhecdss.py
@@ -406,12 +406,12 @@ def write_rts(self, pathname, df, cunits, ctype):
         parts[5] = DSSFile.FREQ_EPART_MAP[df.index.freq]
         pathname = "/".join(parts)
         if isinstance(df.index[0], pd.Period):
-            sp = df.index[0]+df.index.freq
+            sp = df.index[0].to_timestamp(how='end')
         else:
             sp = df.index[0]
         istat = pyheclib.hec_zsrtsxd(self.ifltab, pathname,
                                      sp.strftime("%d%b%Y").upper(
-                                     ), sp.strftime("%H%M"),
+                                     ), sp.round(freq='T').strftime("%H%M"),
                                      df.iloc[:, 0].values, cunits[:8], ctype[:8])
         self._respond_to_istat_state(istat)
 
diff --git a/tests/test1.dss b/tests/test1.dss
index ded906e..fa26bb8 100755
Binary files a/tests/test1.dss and b/tests/test1.dss differ