diff --git a/src/NodaTimeSplitter.php b/src/NodaTimeSplitter.php
index f1850d8..be754b5 100644
--- a/src/NodaTimeSplitter.php
+++ b/src/NodaTimeSplitter.php
@@ -266,7 +266,7 @@ final class NodaTimeSplitter {
             );
 
             try {
-                return $prefix . $fmt->format(MD_STD::strtotime("{$moda[0]}-{$moda[2]}-10 01:01:01")) . $suffix;
+                return $prefix . $fmt->format(MD_STD::strtotime("{$moda[0]}-{$moda[2]}-15 01:01:01")) . $suffix;
             }
             catch (MDInvalidInputDate $e) {
                 return "";
diff --git a/tests/NodaTimeSplitterTest.php b/tests/NodaTimeSplitterTest.php
index e2d1a8a..372fd26 100644
--- a/tests/NodaTimeSplitterTest.php
+++ b/tests/NodaTimeSplitterTest.php
@@ -201,9 +201,49 @@ final class NodaTimeSplitterTest extends TestCase {
             4 => "+",
             5 => "",
         ]);
+
         self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "Januar 1217");
         self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 1217);
 
+        $output = NodaTimeSplitter::attempt_splitting("Januar 1520");
+        self::assertEquals($output, [
+            0 => "1520",
+            1 => "1520",
+            2 => "01",
+            3 => "00",
+            4 => "+",
+            5 => "",
+        ]);
+
+        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "Januar 1520");
+        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 1520);
+
+        $output = NodaTimeSplitter::attempt_splitting("Januar 1001");
+        self::assertEquals($output, [
+            0 => "1001",
+            1 => "1001",
+            2 => "01",
+            3 => "00",
+            4 => "+",
+            5 => "",
+        ]);
+
+        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "Januar 1001");
+        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 1001);
+
+        $output = NodaTimeSplitter::attempt_splitting("Januar 2780");
+        self::assertEquals($output, [
+            0 => "2780",
+            1 => "2780",
+            2 => "01",
+            3 => "00",
+            4 => "+",
+            5 => "",
+        ]);
+
+        self::assertEquals(NodaTimeSplitter::timePartsToTimeName($output), "Januar 2780");
+        self::assertEquals(NodaTimeSplitter::timePartsToCountingYear($output), 2780);
+
         $output = NodaTimeSplitter::attempt_splitting("Nach 60er Jahre");
         self::assertEquals($output, [
             0 => "1970",