diff --git a/com.pilosa.client/src/main/java/com/pilosa/client/ShardColumns.java b/com.pilosa.client/src/main/java/com/pilosa/client/ShardColumns.java
index a77939c..7799ab1 100644
--- a/com.pilosa.client/src/main/java/com/pilosa/client/ShardColumns.java
+++ b/com.pilosa.client/src/main/java/com/pilosa/client/ShardColumns.java
@@ -217,14 +217,14 @@ private String viewByTimeUnit(long timestamp, char c) {
     }
 
     private Map<Character, SimpleDateFormat> timeFormats = new HashMap<>(4);
-
-    {
+   {
         timeFormats.put('Y', new SimpleDateFormat("yyyy"));
-        timeFormats.put('M', new SimpleDateFormat("MM"));
-        timeFormats.put('D', new SimpleDateFormat("dd"));
-        timeFormats.put('H', new SimpleDateFormat("mm"));
+        timeFormats.put('M', new SimpleDateFormat("yyyyMM"));
+        timeFormats.put('D', new SimpleDateFormat("yyyyMMdd"));
+        timeFormats.put('H', new SimpleDateFormat("yyyyMMddHH"));
     }
 
+
     private final Field field;
     private final long shard;
     private final long shardWidth;