diff --git a/Example-Objc/FSCalendar.xcodeproj/project.pbxproj b/Example-Objc/FSCalendar.xcodeproj/project.pbxproj
index 8d13c9b0..e0bf6ebd 100644
--- a/Example-Objc/FSCalendar.xcodeproj/project.pbxproj
+++ b/Example-Objc/FSCalendar.xcodeproj/project.pbxproj
@@ -755,7 +755,7 @@
 				CLANG_ANALYZER_NONNULL = YES;
 				DEBUG_INFORMATION_FORMAT = dwarf;
 				INFOPLIST_FILE = FSCalendarTests/Info.plist;
-				IPHONEOS_DEPLOYMENT_TARGET = 9.3;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.wenchao.FSCalendarTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -769,7 +769,7 @@
 				BUNDLE_LOADER = "$(TEST_HOST)";
 				CLANG_ANALYZER_NONNULL = YES;
 				INFOPLIST_FILE = FSCalendarTests/Info.plist;
-				IPHONEOS_DEPLOYMENT_TARGET = 9.3;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.wenchao.FSCalendarTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -825,7 +825,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
@@ -873,7 +873,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				VALIDATE_PRODUCT = YES;
@@ -886,7 +886,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				DEVELOPMENT_TEAM = HZF422TY46;
 				INFOPLIST_FILE = "$(SRCROOT)/Info.plist";
-				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.wenchaod.FSCalendarExample;
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -900,7 +900,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				DEVELOPMENT_TEAM = HZF422TY46;
 				INFOPLIST_FILE = "$(SRCROOT)/Info.plist";
-				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.wenchaod.FSCalendarExample;
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -923,7 +923,7 @@
 				);
 				INFOPLIST_FILE = "$(SRCROOT)/../FSCalendar/Info.plist";
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
-				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				MARKETING_VERSION = 2.8.4;
 				PRODUCT_BUNDLE_IDENTIFIER = com.wenchaod.FSCalendar;
@@ -946,7 +946,7 @@
 				DYLIB_INSTALL_NAME_BASE = "@rpath";
 				INFOPLIST_FILE = "$(SRCROOT)/../FSCalendar/Info.plist";
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
-				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				MARKETING_VERSION = 2.8.4;
 				PRODUCT_BUNDLE_IDENTIFIER = com.wenchaod.FSCalendar;
@@ -970,7 +970,7 @@
 					"$(inherited)",
 				);
 				INFOPLIST_FILE = FSCalendarExampleUITests/Info.plist;
-				IPHONEOS_DEPLOYMENT_TARGET = 10.2;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.wenchaod.FSCalendarExampleUITests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -985,7 +985,7 @@
 				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
 				DEVELOPMENT_TEAM = HZF422TY46;
 				INFOPLIST_FILE = FSCalendarExampleUITests/Info.plist;
-				IPHONEOS_DEPLOYMENT_TARGET = 10.2;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.wenchaod.FSCalendarExampleUITests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
diff --git a/Example-Objc/RangePickerViewController.m b/Example-Objc/RangePickerViewController.m
index af5e4479..02374263 100644
--- a/Example-Objc/RangePickerViewController.m
+++ b/Example-Objc/RangePickerViewController.m
@@ -26,6 +26,9 @@ @interface RangePickerViewController () <FSCalendarDataSource,FSCalendarDelegate
 
 - (void)configureCell:(__kindof FSCalendarCell *)cell forDate:(NSDate *)date atMonthPosition:(FSCalendarMonthPosition)position;
 
+@property (strong, nonatomic) NSDate *minDate;
+@property (strong, nonatomic) NSDate *maxDate;
+
 @end
 
 @implementation RangePickerViewController
@@ -51,6 +54,8 @@ - (void)loadView
     calendar.pagingEnabled = NO;
     calendar.allowsMultipleSelection = YES;
     calendar.rowHeight = 60;
+    calendar.footerHeight = 50;
+    calendar.floatingModeNotDisplayNonVisibleAreasDate = YES;
     calendar.placeholderType = FSCalendarPlaceholderTypeNone;
     [view addSubview:calendar];
     self.calendar = calendar;
@@ -80,6 +85,8 @@ - (void)viewDidLoad
     
     // For UITest
     self.calendar.accessibilityIdentifier = @"calendar";
+    self.minDate = [self.gregorian dateByAddingUnit:NSCalendarUnitMonth value:-36 toDate:[NSDate date] options:0];
+    self.maxDate = [NSDate date];
 }
 
 - (void)dealloc
@@ -91,12 +98,14 @@ - (void)dealloc
 
 - (NSDate *)minimumDateForCalendar:(FSCalendar *)calendar
 {
-    return [self.dateFormatter dateFromString:@"2020-07-08"];
+//    return [self.dateFormatter dateFromString:@"2020-07-08"];
+    return self.minDate;
 }
 
 - (NSDate *)maximumDateForCalendar:(FSCalendar *)calendar
 {
-    return [self.gregorian dateByAddingUnit:NSCalendarUnitMonth value:10 toDate:[NSDate date] options:0];
+//    return [self.gregorian dateByAddingUnit:NSCalendarUnitMonth value:10 toDate:[NSDate date] options:0];
+    return self.maxDate;
 }
 
 - (NSString *)calendar:(FSCalendar *)calendar titleForDate:(NSDate *)date
@@ -173,6 +182,35 @@ - (void)calendar:(FSCalendar *)calendar didDeselectDate:(NSDate *)date atMonthPo
     return @[appearance.eventDefaultColor];
 }
 
+
+- (nullable UIColor *)calendar:(FSCalendar *)calendar appearance:(FSCalendarAppearance *)appearance titleDefaultColorForDate:(NSDate *)date {
+    if([self outofRangeDate:date]){
+        UIColor *color;
+        if(self.calendar.floatingModeNotDisplayNonVisibleAreasDate){
+            color = [UIColor clearColor];
+        }else {
+            color = [UIColor grayColor];
+        }
+        return color;
+    }
+    
+    UIColor *subColor = [UIColor colorWithRed:0/255.0 green:0/255.0 blue:0/255.0 alpha:1.0];
+
+    return subColor;
+}
+
+- (BOOL)outofRangeDate:(NSDate *)date {
+    BOOL outof = NO;
+    if(([self.gregorian compareDate:date toDate:self.minDate toUnitGranularity:NSCalendarUnitDay] == NSOrderedAscending) ||
+       ([self.gregorian compareDate:date toDate:self.maxDate toUnitGranularity:NSCalendarUnitDay] == NSOrderedDescending)){
+        outof = YES;
+    }
+    return outof;
+}
+
+
+
+
 #pragma mark - Private methods
 
 - (void)configureVisibleCells
diff --git a/FSCalendar/FSCalendar.h b/FSCalendar/FSCalendar.h
index a1204294..5934a9c0 100644
--- a/FSCalendar/FSCalendar.h
+++ b/FSCalendar/FSCalendar.h
@@ -337,6 +337,15 @@ IB_DESIGNABLE
  */
 @property (assign, nonatomic) IBInspectable CGFloat headerHeight;
 
+/**
+ The height of month footer of the calendar. Give a '0' to remove the footer.
+ */
+@property (assign, nonatomic) IBInspectable CGFloat footerHeight;
+
+
+//不展示当月不在日历区域的日期时间
+@property (assign, nonatomic) BOOL floatingModeNotDisplayNonVisibleAreasDate;
+
 /**
  The height of weekday header of the calendar.
  */
diff --git a/FSCalendar/FSCalendar.m b/FSCalendar/FSCalendar.m
index 6d72810a..706698a4 100644
--- a/FSCalendar/FSCalendar.m
+++ b/FSCalendar/FSCalendar.m
@@ -217,6 +217,9 @@ - (void)initialize
     [collectionView registerClass:[FSCalendarCell class] forCellWithReuseIdentifier:FSCalendarDefaultCellReuseIdentifier];
     [collectionView registerClass:[FSCalendarBlankCell class] forCellWithReuseIdentifier:FSCalendarBlankCellReuseIdentifier];
     [collectionView registerClass:[FSCalendarStickyHeader class] forSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:@"header"];
+    
+    [collectionView registerClass:[UICollectionReusableView class] forSupplementaryViewOfKind:UICollectionElementKindSectionFooter withReuseIdentifier:@"footer"];
+    
     [collectionView registerClass:[UICollectionReusableView class] forSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:@"placeholderHeader"];
     [daysContainer addSubview:collectionView];
     self.collectionView = collectionView;
@@ -446,6 +449,11 @@ - (UICollectionReusableView *)collectionView:(UICollectionView *)collectionView
             [stickyHeader setNeedsLayout];
             return stickyHeader;
         }
+        
+        
+        if ([kind isEqualToString:UICollectionElementKindSectionFooter]) {
+            return [collectionView dequeueReusableSupplementaryViewOfKind:UICollectionElementKindSectionFooter withReuseIdentifier:@"footer" forIndexPath:indexPath];
+        }
     }
     return [collectionView dequeueReusableSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:@"placeholderHeader" forIndexPath:indexPath];
 }
@@ -812,6 +820,23 @@ - (void)setWeekdayHeight:(CGFloat)weekdayHeight
     }
 }
 
+- (void)setFooterHeight:(CGFloat)footerHeight
+{
+    if (_footerHeight != footerHeight) {
+        _footerHeight = footerHeight;
+        _needsAdjustingViewFrame = YES;
+        [self setNeedsLayout];
+    }
+}
+
+- (void)setFloatingModeNotDisplayNonVisibleAreasDate:(BOOL)floatingModeNotDisplayNonVisibleAreasDate {
+    if (_floatingModeNotDisplayNonVisibleAreasDate != floatingModeNotDisplayNonVisibleAreasDate) {
+        _floatingModeNotDisplayNonVisibleAreasDate = floatingModeNotDisplayNonVisibleAreasDate;
+        _needsAdjustingViewFrame = YES;
+        [self setNeedsLayout];
+    }
+}
+
 - (void)setLocale:(NSLocale *)locale
 {
     if (![_locale isEqual:locale]) {
diff --git a/FSCalendar/FSCalendarCalculator.m b/FSCalendar/FSCalendarCalculator.m
index 3ad7c836..6313fb8d 100644
--- a/FSCalendar/FSCalendarCalculator.m
+++ b/FSCalendar/FSCalendarCalculator.m
@@ -117,7 +117,7 @@ - (NSIndexPath *)indexPathForDate:(NSDate *)date atMonthPosition:(FSCalendarMont
     NSInteger section = 0;
     switch (scope) {
         case FSCalendarScopeMonth: {
-            section = [self.gregorian components:NSCalendarUnitMonth fromDate:[self.gregorian fs_firstDayOfMonth:self.minimumDate] toDate:[self.gregorian fs_firstDayOfMonth:date] options:0].month;
+            section = [self.gregorian components:NSCalendarUnitMonth fromDate:[self.gregorian fs_firstDayOfMonth:self.minimumDate] toDate:[self.gregorian fs_firstDayOfMonth:date] options:0].month;//这里只是为了判断当前的日期月份跟最小日期的月份之间的月份差有多少来判断section位置 所以不用调整 [self.gregorian fs_firstDayOfMonth:self.minimumDate] 为 [self currentMiniDate]
             if (position == FSCalendarMonthPositionPrevious) {
                 section++;
             } else if (position == FSCalendarMonthPositionNext) {
@@ -162,21 +162,47 @@ - (NSDate *)monthForSection:(NSInteger)section
     NSNumber *key = @(section);
     NSDate *month = self.months[key];
     if (!month) {
-        month = [self.gregorian dateByAddingUnit:NSCalendarUnitMonth value:section toDate:[self.gregorian fs_firstDayOfMonth:self.minimumDate] options:0];
-        NSInteger numberOfHeadPlaceholders = [self numberOfHeadPlaceholdersForMonth:month];
-        NSDate *monthHead = [self.gregorian dateByAddingUnit:NSCalendarUnitDay value:-numberOfHeadPlaceholders toDate:month options:0];
+        month = [self.gregorian dateByAddingUnit:NSCalendarUnitMonth value:section toDate:[self currentMiniDate] options:0];
+        
+        NSInteger numberOfHeadPlaceholders;
+        NSDate *monthHead;
+        if(self.calendar.floatingModeNotDisplayNonVisibleAreasDate){
+            if([self isInSameMonth:month time2:self.minimumDate]){
+                numberOfHeadPlaceholders = [self numberOfHeadPlaceholdersForMonth:month];
+                monthHead = [self.gregorian dateByAddingUnit:NSCalendarUnitDay value:-numberOfHeadPlaceholders toDate:month options:0];
+            }else {
+                NSDate *firstDate = [self.gregorian fs_firstDayOfMonth:month];
+                numberOfHeadPlaceholders = [self numberOfHeadPlaceholdersForMonth:firstDate];
+                monthHead = [self.gregorian dateByAddingUnit:NSCalendarUnitDay value:-numberOfHeadPlaceholders toDate:firstDate options:0];
+                month = firstDate;
+            }
+        }else {
+            numberOfHeadPlaceholders = [self numberOfHeadPlaceholdersForMonth:month];
+            monthHead = [self.gregorian dateByAddingUnit:NSCalendarUnitDay value:-numberOfHeadPlaceholders toDate:month options:0];
+        }
+        
         self.months[key] = month;
         self.monthHeads[key] = monthHead;
     }
     return month;
 }
 
+- (NSDate *)currentMiniDate {
+    NSDate *miniDate;
+    if(self.calendar.floatingModeNotDisplayNonVisibleAreasDate){
+        miniDate = self.minimumDate;
+    }else {
+        miniDate = [self.gregorian fs_firstDayOfMonth:self.minimumDate];
+    }
+    return miniDate;
+}
+
 - (NSDate *)monthHeadForSection:(NSInteger)section
 {
     NSNumber *key = @(section);
     NSDate *monthHead = self.monthHeads[key];
     if (!monthHead) {
-        NSDate *month = [self.gregorian dateByAddingUnit:NSCalendarUnitMonth value:section toDate:[self.gregorian fs_firstDayOfMonth:self.minimumDate] options:0];
+        NSDate *month = [self.gregorian dateByAddingUnit:NSCalendarUnitMonth value:section toDate:[self currentMiniDate] options:0];
         NSInteger numberOfHeadPlaceholders = [self numberOfHeadPlaceholdersForMonth:month];
         monthHead = [self.gregorian dateByAddingUnit:NSCalendarUnitDay value:-numberOfHeadPlaceholders toDate:month options:0];
         self.months[key] = month;
@@ -224,7 +250,18 @@ - (NSInteger)numberOfRowsInMonth:(NSDate *)month
     if (rowCount == nil) {
         NSDate *firstDayOfMonth = [self.gregorian fs_firstDayOfMonth:month];
         NSInteger weekdayOfFirstDay = [self.gregorian component:NSCalendarUnitWeekday fromDate:firstDayOfMonth];
-        NSInteger numberOfDaysInMonth = [self.gregorian fs_numberOfDaysInMonth:month];
+        NSInteger numberOfDaysInMonth;
+        if(self.calendar.floatingModeNotDisplayNonVisibleAreasDate){
+            if([self isInSameMonth:month time2:self.minimumDate]){
+                numberOfDaysInMonth = [self.gregorian fs_numberOfDaysInMonth:month currentDay:self.minimumDate isRest:YES];
+            }else if([self isInSameMonth:month time2:self.maximumDate]){
+                numberOfDaysInMonth = [self.gregorian fs_numberOfDaysInMonth:month currentDay:self.maximumDate isRest:NO];
+            }else {
+                numberOfDaysInMonth = [self.gregorian fs_numberOfDaysInMonth:month];
+            }
+        }else {
+            numberOfDaysInMonth = [self.gregorian fs_numberOfDaysInMonth:month];
+        }
         NSInteger numberOfPlaceholdersForPrev = ((weekdayOfFirstDay - self.gregorian.firstWeekday) + 7) % 7;
         NSInteger headDayCount = numberOfDaysInMonth + numberOfPlaceholdersForPrev;
         NSInteger numberOfRows = (headDayCount/7) + (headDayCount%7>0);
@@ -234,6 +271,28 @@ - (NSInteger)numberOfRowsInMonth:(NSDate *)month
     return rowCount.integerValue;
 }
 
+/**
+ 是否属于同一月
+
+ @param time1 time1
+ @param time2 time2
+ @return 同一月为真，否则为假
+ */
+- (BOOL)isInSameMonth:(NSDate *)time1 time2:(NSDate *)time2
+{
+    NSDate *date1 = time1;
+    NSDate *date2 = time2;
+
+    NSCalendar *calendar = [NSCalendar currentCalendar];
+    int unit = NSCalendarUnitMonth | NSCalendarUnitYear;
+
+    NSDateComponents *nowCmps = [calendar components:unit fromDate:date1];
+    NSDateComponents *selfCmps = [calendar components:unit fromDate:date2];
+
+    return (nowCmps.year == selfCmps.year)&&(nowCmps.month == selfCmps.month);
+}
+
+
 - (NSInteger)numberOfRowsInSection:(NSInteger)section
 {
     if (self.calendar.transitionCoordinator.representingScope == FSCalendarScopeWeek) return 1;
@@ -270,7 +329,7 @@ - (FSCalendarCoordinate)coordinateForIndexPath:(NSIndexPath *)indexPath
 
 - (void)reloadSections
 {
-    self.numberOfMonths = [self.gregorian components:NSCalendarUnitMonth fromDate:[self.gregorian fs_firstDayOfMonth:self.minimumDate] toDate:self.maximumDate options:0].month+1;
+    self.numberOfMonths = [self.gregorian components:NSCalendarUnitMonth fromDate:[self currentMiniDate] toDate:self.maximumDate options:0].month+1;
     self.numberOfWeeks = [self.gregorian components:NSCalendarUnitWeekOfYear fromDate:[self.gregorian fs_firstDayOfWeek:self.minimumDate] toDate:self.maximumDate options:0].weekOfYear+1;
     [self clearCaches];
 }
diff --git a/FSCalendar/FSCalendarCollectionViewLayout.m b/FSCalendar/FSCalendarCollectionViewLayout.m
index 914b8983..8b2435d1 100644
--- a/FSCalendar/FSCalendarCollectionViewLayout.m
+++ b/FSCalendar/FSCalendarCollectionViewLayout.m
@@ -34,12 +34,16 @@ @interface FSCalendarCollectionViewLayout ()
 @property (assign, nonatomic) CGSize contentSize;
 @property (assign, nonatomic) CGSize collectionViewSize;
 @property (assign, nonatomic) CGSize headerReferenceSize;
+@property (assign, nonatomic) CGSize footerReferenceSize;
+
 @property (assign, nonatomic) NSInteger numberOfSections;
 
 @property (assign, nonatomic) FSCalendarSeparators separators;
 
 @property (strong, nonatomic) NSMutableDictionary<NSIndexPath *, UICollectionViewLayoutAttributes *> *itemAttributes;
 @property (strong, nonatomic) NSMutableDictionary<NSIndexPath *, UICollectionViewLayoutAttributes *> *headerAttributes;
+@property (strong, nonatomic) NSMutableDictionary<NSIndexPath *, UICollectionViewLayoutAttributes *> *footerAttributes;
+
 @property (strong, nonatomic) NSMutableDictionary<NSIndexPath *, UICollectionViewLayoutAttributes *> *rowSeparatorAttributes;
 
 - (void)didReceiveNotifications:(NSNotification *)notification;
@@ -69,6 +73,7 @@ - (instancetype)init
         
         self.itemAttributes = NSMutableDictionary.dictionary;
         self.headerAttributes = NSMutableDictionary.dictionary;
+        self.footerAttributes = NSMutableDictionary.dictionary;
         self.rowSeparatorAttributes = NSMutableDictionary.dictionary;
         
         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(didReceiveNotifications:) name:UIDeviceOrientationDidChangeNotification object:nil];
@@ -105,6 +110,7 @@ - (void)prepareLayout
     
     [self.itemAttributes removeAllObjects];
     [self.headerAttributes removeAllObjects];
+    [self.footerAttributes removeAllObjects];
     [self.rowSeparatorAttributes removeAllObjects];
     
     self.headerReferenceSize = ({
@@ -115,6 +121,14 @@ - (void)prepareLayout
         }
         headerSize;
     });
+    self.footerReferenceSize = ({
+        CGSize headerSize = CGSizeZero;
+        if (self.calendar.floatingMode) {
+            CGFloat headerHeight = self.calendar.footerHeight;
+            headerSize = CGSizeMake(self.collectionView.fs_width, headerHeight);
+        }
+        headerSize;
+    });
     self.estimatedItemSize = ({
         CGFloat width = (self.collectionView.fs_width-self.sectionInsets.left-self.sectionInsets.right)/7.0;
         CGFloat height = ({
@@ -227,6 +241,7 @@ - (void)prepareLayout
                 for (int j = 0; j < rowCount; j++) {
                     sectionHeight += self.heights[j];
                 }
+                sectionHeight += self.footerReferenceSize.height;
                 self.sectionHeights[i] = sectionHeight;
                 height += sectionHeight;
             }
@@ -394,6 +409,8 @@ - (NSArray *)layoutAttributesForElementsInRect:(CGRect)rect
                     }
                 }
             }
+            UICollectionViewLayoutAttributes *footerAttributes = [self layoutAttributesForSupplementaryViewOfKind:UICollectionElementKindSectionFooter atIndexPath:[NSIndexPath indexPathForItem:0 inSection:section]];
+            [layoutAttributes addObject:footerAttributes];
         }
         
     }
@@ -456,6 +473,16 @@ - (UICollectionViewLayoutAttributes *)layoutAttributesForSupplementaryViewOfKind
         }
         return attributes;
     }
+    
+    if ([elementKind isEqualToString:UICollectionElementKindSectionFooter]) {
+        UICollectionViewLayoutAttributes *attributes = self.footerAttributes[indexPath];
+        if (!attributes) {
+            attributes = [UICollectionViewLayoutAttributes layoutAttributesForSupplementaryViewOfKind:UICollectionElementKindSectionFooter withIndexPath:indexPath];
+            attributes.frame = CGRectMake(0, self.sectionBottoms[indexPath.section]-self.footerReferenceSize.height, self.collectionView.fs_width, self.footerReferenceSize.height);
+            self.footerAttributes[indexPath] = attributes;
+        }
+        return attributes;
+    }
     return nil;
 }
 
@@ -517,6 +544,7 @@ - (void)didReceiveNotifications:(NSNotification *)notification
     if ([notification.name isEqualToString:UIApplicationDidReceiveMemoryWarningNotification]) {
         [self.itemAttributes removeAllObjects];
         [self.headerAttributes removeAllObjects];
+        [self.footerAttributes removeAllObjects];
         [self.rowSeparatorAttributes removeAllObjects];
     }
 }
diff --git a/FSCalendar/FSCalendarExtensions.h b/FSCalendar/FSCalendarExtensions.h
index 4b066b4b..2c00defe 100644
--- a/FSCalendar/FSCalendarExtensions.h
+++ b/FSCalendar/FSCalendarExtensions.h
@@ -45,7 +45,7 @@ NS_ASSUME_NONNULL_BEGIN
 - (nullable NSDate *)fs_lastDayOfWeek:(NSDate *)week;
 - (nullable NSDate *)fs_middleDayOfWeek:(NSDate *)week;
 - (NSInteger)fs_numberOfDaysInMonth:(NSDate *)month;
-
+- (NSInteger)fs_numberOfDaysInMonth:(NSDate *)month currentDay:(NSDate *)currentDate isRest:(BOOL)isRest;
 @end
 
 @interface NSMapTable (FSCalendarExtensions)
diff --git a/FSCalendar/FSCalendarExtensions.m b/FSCalendar/FSCalendarExtensions.m
index d955c4c9..024a7a6e 100644
--- a/FSCalendar/FSCalendarExtensions.m
+++ b/FSCalendar/FSCalendarExtensions.m
@@ -216,6 +216,29 @@ - (NSInteger)fs_numberOfDaysInMonth:(NSDate *)month
     return days.length;
 }
 
+
+- (NSInteger)fs_numberOfDaysInMonth:(NSDate *)month currentDay:(NSDate *)currentDate isRest:(BOOL)isRest
+{
+    NSInteger allDays;
+    if(isRest){
+        if (!month) return 0;
+        NSRange days = [self rangeOfUnit:NSCalendarUnitDay
+                                            inUnit:NSCalendarUnitMonth
+                                           forDate:month];
+        
+        // 计算当月当前天数
+        NSDateComponents *currentDateComponents = [self components:NSCalendarUnitDay fromDate:currentDate];
+        NSInteger currentDay = [currentDateComponents day];
+        allDays = days.length - currentDay + 1;
+    }else {
+        // 计算当月当前天数
+        NSDateComponents *currentDateComponents = [self components:NSCalendarUnitDay fromDate:currentDate];
+        NSInteger currentDay = [currentDateComponents day];
+        allDays = currentDay;
+    }
+    return allDays;
+}
+
 - (NSDateComponents *)fs_privateComponents
 {
     NSDateComponents *components = objc_getAssociatedObject(self, _cmd);