diff --git a/lib/src/org/model/org_timestamp.dart b/lib/src/org/model/org_timestamp.dart
index 2c93709..6ae77cf 100644
--- a/lib/src/org/model/org_timestamp.dart
+++ b/lib/src/org/model/org_timestamp.dart
@@ -35,6 +35,14 @@ class OrgSimpleTimestamp extends OrgLeafNode {
   @override
   String toString() => 'OrgSimpleTimestamp';
 
+  DateTime get dateTime => DateTime(
+        int.parse(date.year),
+        int.parse(date.month),
+        int.parse(date.day),
+        time == null ? 0 : int.parse(time!.hour),
+        time == null ? 0 : int.parse(time!.minute),
+      );
+
   @override
   void _toMarkupImpl(OrgSerializer buf) {
     buf
@@ -157,6 +165,22 @@ class OrgTimeRangeTimestamp extends OrgLeafNode {
 
   bool get isActive => prefix == '<' && suffix == '>';
 
+  DateTime get startDateTime => DateTime(
+        int.parse(date.year),
+        int.parse(date.month),
+        int.parse(date.day),
+        int.parse(timeStart.hour),
+        int.parse(timeStart.minute),
+      );
+
+  DateTime get endDateTime => DateTime(
+        int.parse(date.year),
+        int.parse(date.month),
+        int.parse(date.day),
+        int.parse(timeEnd.hour),
+        int.parse(timeEnd.minute),
+      );
+
   @override
   String toString() => 'OrgTimeRangeTimestamp';
 
diff --git a/test/org/model/timestamp_test.dart b/test/org/model/timestamp_test.dart
index 6b63e18..d4e664d 100644
--- a/test/org/model/timestamp_test.dart
+++ b/test/org/model/timestamp_test.dart
@@ -13,6 +13,7 @@ void main() {
       expect(result.contains('Wed'), isTrue);
       expect(result.contains('あ'), isFalse);
       expect(result.isActive, isTrue);
+      expect(result.dateTime, DateTime(2020, 03, 12));
       expect(result.toMarkup(), markup);
     });
     test('date and time', () {
@@ -22,6 +23,7 @@ void main() {
       expect(result.contains('Wed'), isTrue);
       expect(result.contains('あ'), isFalse);
       expect(result.isActive, isTrue);
+      expect(result.dateTime, DateTime(2020, 03, 12, 08, 34));
       expect(result.toMarkup(), markup);
     });
     test('with repeater', () {
@@ -32,6 +34,7 @@ void main() {
       expect(result.contains('+1w'), isTrue);
       expect(result.contains('あ'), isFalse);
       expect(result.isActive, isTrue);
+      expect(result.dateTime, DateTime(2020, 03, 12, 08, 34));
       expect(result.toMarkup(), markup);
     });
     test('with repeater (min/max)', () {
@@ -42,6 +45,7 @@ void main() {
       expect(result.contains('+1w/2w'), isTrue);
       expect(result.contains('あ'), isFalse);
       expect(result.isActive, isTrue);
+      expect(result.dateTime, DateTime(2020, 03, 12, 08, 34));
       expect(result.toMarkup(), markup);
     });
     test('with multiple repeaters', () {
@@ -53,6 +57,7 @@ void main() {
       expect(result.contains('--2d'), isTrue);
       expect(result.contains('あ'), isFalse);
       expect(result.isActive, isTrue);
+      expect(result.dateTime, DateTime(2020, 03, 12, 08, 34));
       expect(result.toMarkup(), markup);
     });
     test('inactive', () {
@@ -64,6 +69,7 @@ void main() {
       expect(result.contains('--12d'), isTrue);
       expect(result.contains('あ'), isFalse);
       expect(result.isActive, isFalse);
+      expect(result.dateTime, DateTime(2020, 03, 12, 18, 34));
       expect(result.toMarkup(), markup);
     });
     test('time range', () {
@@ -75,6 +81,8 @@ void main() {
       expect(result.contains('--12d'), isTrue);
       expect(result.contains('あ'), isFalse);
       expect(result.isActive, isFalse);
+      expect(result.startDateTime, DateTime(2020, 03, 12, 18, 34));
+      expect(result.endDateTime, DateTime(2020, 03, 12, 19, 35));
       expect(result.toMarkup(), markup);
     });
     test('date range', () {
@@ -89,6 +97,8 @@ void main() {
       expect(result.contains('--12d'), isTrue);
       expect(result.contains('あ'), isFalse);
       expect(result.isActive, isFalse);
+      expect(result.start.dateTime, DateTime(2020, 03, 11, 18, 34));
+      expect(result.end.dateTime, DateTime(2020, 03, 12, 18, 34));
       expect(result.toMarkup(), markup);
     });
     test('sexp', () {