diff --git a/src/Makefile.am b/src/Makefile.am
index 1061a49a..77e0c978 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -39,10 +39,12 @@ TIME_FORMATS = \
     "@%@" \
     "%Y-%m-%d %H:%M:%S" \
     "%Y-%m-%d %H:%M:%S%z" \
+    "%Y-%m-%d %H:%M:%S %z" \
     "%Y-%m-%d %H:%M" \
     "%Y-%m-%dT%H:%M:%S.%f%z" \
     "%y-%m-%dT%H:%M:%S.%f%z" \
     "%Y-%m-%dT%H:%M:%SZ" \
+    "%Y-%m-%dT%H:%M:%S%z" \
     "%Y-%m-%dT%H:%M:%S" \
     "%Y-%m-%dT%H:%M:%S%z" \
     "%Y/%m/%d %H:%M:%S" \