diff --git a/core/src/main/scala/com/salesforce/op/stages/impl/feature/DateMapToUnitCircleVectorizer.scala b/core/src/main/scala/com/salesforce/op/stages/impl/feature/DateMapToUnitCircleVectorizer.scala
index 8c7a0e5358..09b9f8ca60 100644
--- a/core/src/main/scala/com/salesforce/op/stages/impl/feature/DateMapToUnitCircleVectorizer.scala
+++ b/core/src/main/scala/com/salesforce/op/stages/impl/feature/DateMapToUnitCircleVectorizer.scala
@@ -125,7 +125,7 @@ final class DateMapToUnitCircleVectorizerModel[T <: DateMap] private[op]
         val cleanedMap = cleanMap(map, shouldClean, shouldCleanValue = false)
         keys.map(k => {
           val vOpt = cleanedMap.get(k)
-          DateToUnitCircle.convertToRandians(vOpt, timePeriod)
+          DateToUnitCircle.convertToRadians(vOpt, timePeriod)
         })
       }.toArray
     Vectors.dense(eachPivoted.flatten).compressed.toOPVector
diff --git a/core/src/main/scala/com/salesforce/op/stages/impl/feature/DateToUnitCircleTransformer.scala b/core/src/main/scala/com/salesforce/op/stages/impl/feature/DateToUnitCircleTransformer.scala
index 00c34e7f18..f42ccd34d2 100644
--- a/core/src/main/scala/com/salesforce/op/stages/impl/feature/DateToUnitCircleTransformer.scala
+++ b/core/src/main/scala/com/salesforce/op/stages/impl/feature/DateToUnitCircleTransformer.scala
@@ -83,8 +83,8 @@ class DateToUnitCircleTransformer[T <: Date]
 ) with DateToUnitCircleParams {
 
   override def transformFn: Seq[T] => OPVector = timestamp => {
-    val randians = timestamp.flatMap(ts => DateToUnitCircle.convertToRandians(ts.v, getTimePeriod)).toArray
-    Vectors.dense(randians).toOPVector
+    val radians = timestamp.flatMap(ts => DateToUnitCircle.convertToRadians(ts.v, getTimePeriod)).toArray
+    Vectors.dense(radians).toOPVector
   }
 
   override def onGetMetadata(): Unit = {
@@ -101,17 +101,20 @@ class DateToUnitCircleTransformer[T <: Date]
 
 private[op] object DateToUnitCircle {
 
+  val defaultRadians: Array[Double] = Array(1.0, 0.0)
+
   def metadataValues(timePeriod: TimePeriod): Seq[String] = Seq(s"x_$timePeriod", s"y_$timePeriod")
 
   def convertToBin(timestamp: Long, timePeriodDesired: TimePeriod): Double =
     getPeriodWithSize(timestamp, timePeriodDesired)._1
 
-  def convertToRandians(timestamp: Option[Long], timePeriodDesired: TimePeriod): Array[Double] =
+  def convertToRadians(timestamp: Option[Long], timePeriodDesired: TimePeriod,
+                       nullRadians: Array[Double] = defaultRadians): Array[Double] =
     timestamp.map { ts =>
       val (timePeriod, periodSize) = getPeriodWithSize(ts, timePeriodDesired)
       val radians = (2 * math.Pi * timePeriod) / periodSize
       Array(math.cos(radians), math.sin(radians))
-    }.getOrElse(Array(0.0, 0.0))
+    }.getOrElse(nullRadians)
 
   private def getPeriodWithSize(timestamp: Long, timePeriod: TimePeriod): (Double, Int) = {
     val tpv = timePeriod.extractTimePeriodVal(timestamp)
diff --git a/core/src/test/scala/com/salesforce/op/stages/impl/feature/DateMapToUnitCircleVectorizerTest.scala b/core/src/test/scala/com/salesforce/op/stages/impl/feature/DateMapToUnitCircleVectorizerTest.scala
index e56a1d0970..1098e452d2 100644
--- a/core/src/test/scala/com/salesforce/op/stages/impl/feature/DateMapToUnitCircleVectorizerTest.scala
+++ b/core/src/test/scala/com/salesforce/op/stages/impl/feature/DateMapToUnitCircleVectorizerTest.scala
@@ -69,7 +69,7 @@ class DateMapToUnitCircleVectorizerTest extends OpEstimatorSpec[OPVector, Sequen
    */
   override val expectedResult: Seq[OPVector] = sampleDateTimes
     .map{ v =>
-      val rad = DateToUnitCircle.convertToRandians(Option(v.getMillis), TimePeriod.HourOfDay)
+      val rad = DateToUnitCircle.convertToRadians(Option(v.getMillis), TimePeriod.HourOfDay)
       (rad ++ rad).toOPVector
     }
 
diff --git a/core/src/test/scala/com/salesforce/op/stages/impl/feature/DateToUnitCircleTransformerTest.scala b/core/src/test/scala/com/salesforce/op/stages/impl/feature/DateToUnitCircleTransformerTest.scala
index ec21ef4706..b3d182a1a5 100644
--- a/core/src/test/scala/com/salesforce/op/stages/impl/feature/DateToUnitCircleTransformerTest.scala
+++ b/core/src/test/scala/com/salesforce/op/stages/impl/feature/DateToUnitCircleTransformerTest.scala
@@ -125,7 +125,7 @@ class DateToUnitCircleTransformerTest extends OpTransformerSpec[OPVector, DateTo
     val vector = vectorizer.getOutput()
     val actual = transformed.collect(vector)
     val expected = Array(
-      Array(0.0, 0.0),
+      Array(1.0, 0.0),
       Array(1.0, 0.0)
     ).map(Vectors.dense(_).toOPVector)
     all(actual.zip(expected).map(g => Vectors.sqdist(g._1.value, g._2.value))) should be < eps