diff --git a/LifeLog/LifeLog/RankingViewController.h b/LifeLog/LifeLog/RankingViewController.h
index cc55d1e..16fff39 100644
--- a/LifeLog/LifeLog/RankingViewController.h
+++ b/LifeLog/LifeLog/RankingViewController.h
@@ -21,5 +21,6 @@
 @property (weak, nonatomic) IBOutlet CollectionView *viewCollectionType;
 @property (weak, nonatomic) IBOutlet UILabel *lblDateTime;
 
-- (IBAction)clickButton:(UIButton *)sender;
+- (IBAction)clickBackward:(UIButton *)sender;
+- (IBAction)clickForward:(UIButton *)sender;
 @end
diff --git a/LifeLog/LifeLog/RankingViewController.m b/LifeLog/LifeLog/RankingViewController.m
index 8593b6d..796414f 100644
--- a/LifeLog/LifeLog/RankingViewController.m
+++ b/LifeLog/LifeLog/RankingViewController.m
@@ -70,8 +70,14 @@
 
 
 #pragma mark IBAction function
+- (IBAction)clickBackward:(UIButton *)sender {
+    _endDate = [_endDate dateByAddingTimeInterval:-86400];
+    [self changeDate];
+}
 
-- (IBAction)clickButton:(UIButton *)sender {
+- (IBAction)clickForward:(UIButton *)sender {
+    _endDate = [_endDate dateByAddingTimeInterval:86400];
+    [self changeDate];
 }
 
 #pragma mark UITableView Delegate
diff --git a/LifeLog/LifeLog/RankingViewController.xib b/LifeLog/LifeLog/RankingViewController.xib
index 60ad430..f36fbeb 100644
--- a/LifeLog/LifeLog/RankingViewController.xib
+++ b/LifeLog/LifeLog/RankingViewController.xib
@@ -99,7 +99,7 @@ MjAxNuW5tCAx5pyIMjLml6XjgIDvvI3jgIAyMDE35bm0IDHmnIgyMeaXpQ0KAA
                             </constraints>
                             <state key="normal" image="icon_left"/>
                             <connections>
-                                <action selector="clickButton:" destination="-1" eventType="touchUpInside" id="f1Y-rj-F7d"/>
+                                <action selector="clickBackward:" destination="-1" eventType="touchUpInside" id="8KB-3G-h6v"/>
                             </connections>
                         </button>
                         <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="Usl-Cl-d9d">
@@ -110,7 +110,7 @@ MjAxNuW5tCAx5pyIMjLml6XjgIDvvI3jgIAyMDE35bm0IDHmnIgyMeaXpQ0KAA
                             </constraints>
                             <state key="normal" image="icon_right"/>
                             <connections>
-                                <action selector="clickButton:" destination="-1" eventType="touchUpInside" id="OB1-mE-CGE"/>
+                                <action selector="clickForward:" destination="-1" eventType="touchUpInside" id="sgL-89-hXv"/>
                             </connections>
                         </button>
                     </subviews>