diff --git a/Julian.cpp b/Julian.cpp
index 93e9c66..be3917c 100755
--- a/Julian.cpp
+++ b/Julian.cpp
@@ -15,7 +15,7 @@
 #endif
 
 Julian::Julian() {
-    
+
 #ifdef WIN32
     SYSTEMTIME st;
     GetSystemTime(&st);
@@ -154,8 +154,14 @@ Julian Julian::operator-(const Timespan& b) const {
     return result;
 }
 
+Timespan Julian::operator-(const Julian& b) const {
+
+    Timespan result(date_ - b.date_);
+    return result;
+}
+
 std::ostream & operator<<(std::ostream& stream, const Julian& julian) {
-    
+
     std::stringstream out;
     struct Julian::DateTimeComponents datetime;
     julian.ToGregorian(&datetime);
@@ -229,7 +235,7 @@ time_t Julian::ToTime() const {
  * Greenwich Mean Sidereal Time
  */
 double Julian::ToGreenwichSiderealTime() const {
-    
+
 #if 0
     double theta;
     double tut1;
diff --git a/Julian.h b/Julian.h
index 6397a50..ff332f9 100755
--- a/Julian.h
+++ b/Julian.h
@@ -33,6 +33,8 @@ public:
     Julian operator+(const Timespan& b) const;
     Julian operator-(const Timespan& b) const;
 
+    Timespan operator-(const Julian& b) const;
+
     friend std::ostream & operator<<(std::ostream& stream, const Julian& julian);
 
     struct DateTimeComponents {
diff --git a/Timespan.cpp b/Timespan.cpp
index a551665..7bb812d 100644
--- a/Timespan.cpp
+++ b/Timespan.cpp
@@ -32,6 +32,10 @@ double Timespan::GetTotalMinutes() const {
     return time_span_ * kMINUTES_PER_DAY;
 }
 
+double Timespan::GetTotalSeconds() const {
+    return time_span_ * kSECONDS_PER_DAY;
+}
+
 Timespan& Timespan::operator =(const Timespan& b) {
 
     if (this != &b) {
diff --git a/Timespan.h b/Timespan.h
index 215f33a..6f7136f 100644
--- a/Timespan.h
+++ b/Timespan.h
@@ -11,6 +11,7 @@ public:
     double GetTotalDays() const;
     double GetTotalHours() const;
     double GetTotalMinutes() const;
+    double GetTotalSeconds() const;
 
     /*
      * overloaded operators