#
#
# patch "dates.cc"
#  from [d84fe04e921485e907b2466e9b8247eddac74ceb]
#    to [ba11e025ca1a3524f6797956db69b89aba1655a5]
# 
# patch "dates.hh"
#  from [89c3e1b55598ecb6580af784fe95b32b201aeb9d]
#    to [cc5126b4615d16165892a528031bb42f6993474f]
#
============================================================
--- dates.cc	d84fe04e921485e907b2466e9b8247eddac74ceb
+++ dates.cc	ba11e025ca1a3524f6797956db69b89aba1655a5
@@ -657,6 +657,25 @@ UNIT_TEST(date, from_unix_epoch)
 #undef OK
 }
 
+UNIT_TEST(date, comparisons)
+{
+  date_t may = date_t::from_string("2000-05-01T00:00:00"),
+         jun = date_t::from_string("2000-06-01T00:00:00"),
+         jul = date_t::from_string("2000-07-01T00:00:00");
+
+  // testing all comparisons operators
+  UNIT_TEST_CHECK(may < jun);
+  UNIT_TEST_CHECK(jun < jul);
+  UNIT_TEST_CHECK(may < jul);
+
+  UNIT_TEST_CHECK(jul > may);
+
+  UNIT_TEST_CHECK(may == date_t::from_string("2000-05-01T00:00:00"));
+  UNIT_TEST_CHECK(may != date_t::from_string("2000-05-01T00:00:01"));
+  UNIT_TEST_CHECK(may != date_t::from_string("2000-09-01T00:00:00"));
+  UNIT_TEST_CHECK(may != date_t::from_string("1999-05-01T00:00:00"));
+}
+
 #endif
 
 // Local Variables:
============================================================
--- dates.hh	89c3e1b55598ecb6580af784fe95b32b201aeb9d
+++ dates.hh	cc5126b4615d16165892a528031bb42f6993474f
@@ -43,6 +43,20 @@ struct date_t
   // Write out date as a string.
   std::string as_iso_8601_extended() const;
 
+  // Date comparison operators
+  bool operator <(struct date_t const & other) const
+    { return d < other.d; };
+  bool operator <=(struct date_t const & other) const
+    { return d <= other.d; };
+  bool operator >(struct date_t const & other) const
+    { return d > other.d; };
+  bool operator >=(struct date_t const & other) const
+    { return d >= other.d; };
+  bool operator ==(struct date_t const & other) const
+    { return d == other.d; };
+  bool operator !=(struct date_t const & other) const
+    { return d != other.d; };
+
 private:
   // The date as an unsigned 64-bit count of seconds since the Unix epoch
   // (1970-01-01T00:00:00).