diff --git a/Socialmetrica.package/NitterUser.class/instance/exportOverviewReportLatex.st b/Socialmetrica.package/NitterUser.class/instance/exportOverviewReportLatex.st
index 8ff00d2..cd211d8 100644
--- a/Socialmetrica.package/NitterUser.class/instance/exportOverviewReportLatex.st
+++ b/Socialmetrica.package/NitterUser.class/instance/exportOverviewReportLatex.st
@@ -4,7 +4,7 @@ exportOverviewReportLatex
 	self
 		exportDefaultReport;
 		externalWordCloud;
-		exportTweetsHistogramWithBars: 7 between: 'March 13 2022' and: 'May 1 2022';
+		exportTweetsHistogramWithBars: 7;
 		exportRetweetsHistogramWithBars: 7;
 		exportRepliesHistogramWithBars: 7;
 		exportQuotesHistogramWithBars: 7.
diff --git a/Socialmetrica.package/NitterUser.class/instance/exportTweetsHistogramWithBars.between.and..st b/Socialmetrica.package/NitterUser.class/instance/exportTweetsHistogramWithBars.between.and..st
deleted file mode 100644
index 686acba..0000000
--- a/Socialmetrica.package/NitterUser.class/instance/exportTweetsHistogramWithBars.between.and..st
+++ /dev/null
@@ -1,34 +0,0 @@
-accessing
-exportTweetsHistogramWithBars: aNumberOfBars between: startDate and: endDate
-
-	| tweetsByTimeSpan subtotals tweetsHistogram diagram |
-
-	tweetsByTimeSpan := self collectMessages: [ self tweetsBetween: startDate and: endDate ] byTimeSpanSplits: aNumberOfBars.
-	subtotals := tweetsByTimeSpan values collect: [ :collection | collection size ].
-	tweetsHistogram := RSChart new.
-	tweetsHistogram extent: 800@200.
-	diagram := RSBarPlot new
-		x: (1 to: subtotals size)
-		y:subtotals.
-	diagram color: (Color r:(91/255) g:(131/255) b:(222/255)).
-	tweetsHistogram addPlot: diagram.
-	tweetsHistogram addDecoration: (RSHorizontalTick new
-    	fromNames: tweetsByTimeSpan keys;
-    	labelRotation: 0;
-		fontSize: 72 /aNumberOfBars;
-    	yourself).
-    tweetsHistogram addDecoration: (RSVerticalTick new 
-		integer;
-		fontSize: 72 /aNumberOfBars).
-	tweetsHistogram build.
-	tweetsHistogram canvas pngExporter 
-		zoomToShapes;
-		noFixedShapes; 
-		fileName: (self folder / 'tweets-histogram.png')fullName;
-		export.
-	tweetsHistogram canvas pdfExporter 
-		zoomToShapes;
-		noFixedShapes; 
-		fileName: (self folder / 'tweets-histogram.pdf')fullName;
-		export.
-	^ self folder / 'tweets-histogram.png'
\ No newline at end of file
diff --git a/Socialmetrica.package/NitterUser.class/instance/reportingPeriod.st b/Socialmetrica.package/NitterUser.class/instance/reportingPeriod.st
new file mode 100644
index 0000000..8779999
--- /dev/null
+++ b/Socialmetrica.package/NitterUser.class/instance/reportingPeriod.st
@@ -0,0 +1,5 @@
+accessing
+reportingPeriod
+	^ self config
+		at: 'reportingPeriod'
+		ifAbsentPut: [ { self messages oldest  created . self messages newest created } ]
\ No newline at end of file
diff --git a/Socialmetrica.package/NitterUser.class/instance/tweetsBetween.and..st b/Socialmetrica.package/NitterUser.class/instance/tweetsBetween.and..st
deleted file mode 100644
index 066cf8d..0000000
--- a/Socialmetrica.package/NitterUser.class/instance/tweetsBetween.and..st
+++ /dev/null
@@ -1,3 +0,0 @@
-accessing
-tweetsBetween: startDate and: endDate 
-	^ self tweets select: [ :each | each created between: startDate asDate and: endDate asDate ]
\ No newline at end of file
diff --git a/Socialmetrica.package/TwitterUser.class/instance/messages.st b/Socialmetrica.package/TwitterUser.class/instance/messages.st
index 45b9f6d..8bb406d 100644
--- a/Socialmetrica.package/TwitterUser.class/instance/messages.st
+++ b/Socialmetrica.package/TwitterUser.class/instance/messages.st
@@ -1,3 +1,4 @@
 accessing
 messages
-	^ messages ifNil: [ messages := TweetsCollection new ]
\ No newline at end of file
+	messages ifNil: [ ^ messages := TweetsCollection new ].
+	^ messages select: [ :message | message created between: self reportingPeriod start and: self reportingPeriod end ]
\ No newline at end of file
diff --git a/Socialmetrica.package/TwitterUser.class/instance/reportingPeriod.st b/Socialmetrica.package/TwitterUser.class/instance/reportingPeriod.st
new file mode 100644
index 0000000..9fa3308
--- /dev/null
+++ b/Socialmetrica.package/TwitterUser.class/instance/reportingPeriod.st
@@ -0,0 +1,3 @@
+accessing
+reportingPeriod
+	^ self subclassResponsibility
\ No newline at end of file