diff --git a/JulianDatesClass.cs b/JulianDatesClass.cs
new file mode 100644
index 0000000..77f2515
--- /dev/null
+++ b/JulianDatesClass.cs
@@ -0,0 +1,95 @@
+using System;
+
+class JulianDatesClass
+{
+  public static double calcJulianDate()
+  {
+    return DateTime.Now.ToOADate() + 2415018.5;
+  }
+
+  public static double calcJulianDate(DateTime date)
+  {
+    return date.ToOADate() + 2415018.5;
+  }
+
+  public static double calcModifiedJulianDate()
+  {
+    return calcJulianDate() - 2400000.5;
+  }
+
+  public static double calcModifiedJulianDate(DateTime date)
+  {
+    return calcJulianDate(date) - 2400000.5;
+  }
+
+  public static double calcReducedJulianDate()
+  {
+    return calcJulianDate() - 2400000;
+  }
+
+  public static double calcReducedJulianDate(DateTime date)
+  {
+    return calcJulianDate(date) - 2400000;
+  }
+
+  public static double calcTruncatedJulianDate()
+  {
+    return Math.Floor(calcJulianDate() - 2440000.5);
+  }
+
+  public static double calcTruncatedJulianDate(DateTime date)
+  {
+    return Math.Floor(calcJulianDate(date) - 2440000.5);
+  }
+
+  public static double calcDublinJulianDate()
+  {
+    return calcJulianDate() - 2415020;
+  }
+
+  public static double calcDublinJulianDate(DateTime date)
+  {
+    return calcJulianDate(date) - 2415020;
+  }
+
+  public static double calcCnesJulianDate()
+  {
+    return calcJulianDate() - 2433282.5;
+  }
+
+  public static double calcCnesJulianDate(DateTime date)
+  {
+    return calcJulianDate(date) - 2433282.5;
+  }
+
+  public static double calcCcsdsJulianDate()
+  {
+    return calcJulianDate() - 2436204.5;
+  }
+
+  public static double calcCcsdsJulianDate(DateTime date)
+  {
+    return calcJulianDate(date) - 2436204.5;
+  }
+
+  public static double calcLopJulianDate()
+  {
+    return calcJulianDate() - 2448622.5;
+  }
+
+  public static double calcLopJulianDate(DateTime date)
+  {
+    return calcJulianDate(date) - 2448622.5;
+  }
+
+  public static double calcMilleniumJulianDate()
+  {
+    return calcJulianDate() - 2451544.5;
+  }
+
+  public static double calcMilleniumJulianDate(DateTime date)
+  {
+    return calcJulianDate(date) - 2451544.5;
+  }
+}
+