diff --git a/packages/core/demo/data/index.ts b/packages/core/demo/data/index.ts
index 9dca31a924..475830a54d 100644
--- a/packages/core/demo/data/index.ts
+++ b/packages/core/demo/data/index.ts
@@ -488,6 +488,36 @@ let allDemoGroups = [
 				data: timeSeriesAxisDemos.lineTimeSeriesNoExtendedDomainData,
 				options: timeSeriesAxisDemos.lineTimeSeriesNoExtendedDomainOptions,
 				chartType: chartTypes.LineChart
+			},
+			{
+				data: timeSeriesAxisDemos.lineTimeSeriesDataTwoIdenticalLabels,
+				options: timeSeriesAxisDemos.lineTimeSeriesTwoIdenticalLabelsOptions,
+				chartType: chartTypes.LineChart
+			},
+			{
+				data: timeSeriesAxisDemos.lineTimeSeriesDataAllLabelsInPrimaryFormat,
+				options: timeSeriesAxisDemos.lineTimeSeriesAllLabelsInPrimaryFormatOptions,
+				chartType: chartTypes.LineChart
+			}
+		]
+	},
+	{
+		title: "Radar",
+		demos: [
+			{
+				data: radarDemos.radarData,
+				options: radarDemos.radarOptions,
+				chartType: chartTypes.RadarChart
+			},
+			{
+				data: radarDemos.radarWithMissingDataData,
+				options: radarDemos.radarWithMissingDataOptions,
+				chartType: chartTypes.RadarChart
+			},
+			{
+				data: radarDemos.radarDenseData,
+				options: radarDemos.radarDenseOptions,
+				chartType: chartTypes.RadarChart
 			}
 		]
 	},
diff --git a/packages/core/demo/data/time-series-axis.ts b/packages/core/demo/data/time-series-axis.ts
index e0bc584146..a1f8927fbc 100644
--- a/packages/core/demo/data/time-series-axis.ts
+++ b/packages/core/demo/data/time-series-axis.ts
@@ -351,3 +351,70 @@ export const lineTimeSeriesNoExtendedDomainOptions = {
 		addSpaceOnEdges: 0
 	}
 };
+
+// bug two identical labels
+export const lineTimeSeriesDataTwoIdenticalLabels = {
+	labels: ["Qty"],
+	datasets: [
+		{
+			label: "Dataset 1",
+			data: [
+				{ date: new Date(2020, 0, 23, 23, 0), value: 10 },
+				{ date: new Date(2020, 1, 9, 23, 0), value: 10 }
+			]
+		}
+	]
+};
+
+export const lineTimeSeriesTwoIdenticalLabelsOptions = {
+	title: "Line (time series) - Two identical labels",
+	axes: {
+		left: {},
+		bottom: {
+			scaleType: "time"
+		}
+	},
+	timeScale: {
+		addSpaceOnEdges: 0
+	}
+};
+
+export const lineTimeSeriesTwoIdenticalLabels2Options = {
+	title: "Line (time series) - Two identical labels 2",
+	axes: {
+		left: {},
+		bottom: {
+			scaleType: "time"
+		}
+	},
+	timeScale: {
+		addSpaceOnEdges: 0
+	}
+};
+
+// bug all labels in primary format
+export const lineTimeSeriesDataAllLabelsInPrimaryFormat = {
+	labels: ["Qty"],
+	datasets: [
+		{
+			label: "Dataset 1",
+			data: [
+				{ date: new Date(2020, 0, 23, 1, 0), value: 10 },
+				{ date: new Date(2020, 0, 29, 1, 0), value: 10 }
+			]
+		}
+	]
+};
+
+export const lineTimeSeriesAllLabelsInPrimaryFormatOptions = {
+	title: "Line (time series) - All labels in primary format",
+	axes: {
+		left: {},
+		bottom: {
+			scaleType: "time"
+		}
+	},
+	timeScale: {
+		addSpaceOnEdges: 0
+	}
+};
diff --git a/packages/core/src/components/axes/axis.ts b/packages/core/src/components/axes/axis.ts
index a0c53e6cc9..d2a6846b04 100644
--- a/packages/core/src/components/axes/axis.ts
+++ b/packages/core/src/components/axes/axis.ts
@@ -133,17 +133,16 @@ export class Axis extends Component {
 				if (!scale.ticks(numberOfTicks).length) {
 					axis.tickValues([]);
 				} else {
-					let tickValues = scale.ticks(numberOfTicks).concat(scale.domain()).map(date => +date).sort();
-					tickValues = Tools.removeArrayDuplicates(tickValues);
+					const tickValues = scale.nice(numberOfTicks).ticks(numberOfTicks);
 
-					// Remove labels on the edges
-					// If there are more than 2 labels to show
-					if (Tools.getProperty(options, "timeScale", "addSpaceOnEdges") && tickValues.length > 2) {
-						tickValues.splice(tickValues.length - 1, 1);
-						tickValues.splice(0, 1);
-					}
+          // Remove labels on the edges
+          // If there are more than 2 labels to show
+          if (Tools.getProperty(options, "timeScale", "addSpaceOnEdges") && tickValues.length > 2) {
+            tickValues.splice(tickValues.length - 1, 1);
+            tickValues.splice(0, 1);
+          }
 
-					axis.tickValues(tickValues);
+          axis.tickValues(tickValues);
 				}
 			}
 		}
diff --git a/packages/core/src/services/time-series.spec.ts b/packages/core/src/services/time-series.spec.ts
index 425f4c1702..6c548c9b0c 100644
--- a/packages/core/src/services/time-series.spec.ts
+++ b/packages/core/src/services/time-series.spec.ts
@@ -26,7 +26,7 @@ it("should format ticks with timeInterval 15seconds", () => {
 		[new Date(2020, 11, 11, 0, 0, 0), "Dec 11, 12:00:00 AM"],
 		[new Date(2020, 11, 11, 0, 0, 15), "12:00:15 AM"],
 		[new Date(2020, 11, 11, 0, 0, 30), "12:00:30 AM"],
-		[new Date(2020, 11, 11, 0, 0, 45), "12:00:45 AM"],
+		[new Date(2020, 11, 11, 0, 0, 45), "12:00:45 AM"]
 	];
 	const { timestamps, formattedTicks } = getTimestampsAndFormattedTicks(dataset);
 	const timeInterval = computeTimeIntervalName(timestamps);
@@ -47,7 +47,7 @@ it("should format ticks with timeInterval minute", () => {
 		[new Date(2020, 4, 22, 11, 59, 0), "11:59 AM"],
 		[new Date(2020, 4, 22, 12, 0, 0), "12:00 PM"],
 		[new Date(2020, 4, 22, 12, 1, 0, 0), "12:01 PM"],
-		[new Date(2020, 4, 22, 12, 2, 0), "12:02 PM"],
+		[new Date(2020, 4, 22, 12, 2, 0), "12:02 PM"]
 	];
 	const { timestamps, formattedTicks } = getTimestampsAndFormattedTicks(dataset);
 	const timeInterval = computeTimeIntervalName(timestamps);
@@ -63,7 +63,7 @@ it("should format ticks with timeInterval 30minutes", () => {
 		[new Date(2020, 11, 11, 0, 0), "Dec 11, 12:00 AM"],
 		[new Date(2020, 11, 11, 0, 30), "12:30 AM"],
 		[new Date(2020, 11, 11, 1, 0), "1:00 AM"],
-		[new Date(2020, 11, 11, 1, 30), "1:30 AM"],
+		[new Date(2020, 11, 11, 1, 30), "1:30 AM"]
 	];
 	const { timestamps, formattedTicks } = getTimestampsAndFormattedTicks(dataset);
 	const timeInterval = computeTimeIntervalName(timestamps);
@@ -85,7 +85,7 @@ it("should format ticks with timeInterval hourly", () => {
 		[new Date(2020, 11, 11, 12, 0), "12 PM"],
 		[new Date(2020, 11, 11, 13, 0), "01 PM"],
 		[new Date(2020, 11, 11, 14, 0), "02 PM"],
-		[new Date(2020, 11, 11, 15, 0), "03 PM"],
+		[new Date(2020, 11, 11, 15, 0), "03 PM"]
 	];
 	const { timestamps: timestampsDefaultFormats, formattedTicks: formattedTicksDefaultFormats } =
 		getTimestampsAndFormattedTicks(datasetDefaultFormats);
@@ -106,7 +106,7 @@ it("should format ticks with timeInterval hourly", () => {
 		[new Date(2020, 11, 11, 12, 0), "12:00"],
 		[new Date(2020, 11, 11, 13, 0), "13:00"],
 		[new Date(2020, 11, 11, 14, 0), "14:00"],
-		[new Date(2020, 11, 11, 15, 0), "15:00"],
+		[new Date(2020, 11, 11, 15, 0), "15:00"]
 	];
 	const { timestamps: timestampsCustomFormats, formattedTicks: formattedTicksCustomFormats } =
 		getTimestampsAndFormattedTicks(datasetCustomFormats);
@@ -115,7 +115,7 @@ it("should format ticks with timeInterval hourly", () => {
 	const timeScaleCustomOptions = {
 		...timeScaleDefaultOptions,
 		timeIntervalFormats: {
-			"hourly": { primary: "MMM d, HH:mm", secondary: "HH:mm" },
+			"hourly": { primary: "MMM d, HH:mm", secondary: "HH:mm" }
 		}
 	};
 	expect(format(timestampsCustomFormats, timeIntervalCustomFormats, timeScaleCustomOptions)).toEqual(formattedTicksCustomFormats);
@@ -134,7 +134,7 @@ it("should format ticks with timeInterval daily", () => {
 		[new Date(2020, 0, 31), "31"],
 		[new Date(2020, 1, 1), "Feb 1"],
 		[new Date(2020, 1, 2), "2"],
-		[new Date(2020, 1, 3), "3"],
+		[new Date(2020, 1, 3), "3"]
 	];
 	const { timestamps, formattedTicks } = getTimestampsAndFormattedTicks(dataset);
 	const timeInterval = computeTimeIntervalName(timestamps);
@@ -155,7 +155,7 @@ it("should format ticks with timeInterval weekly", () => {
 		[new Date(2020, 1, 4), "Tue"],
 		[new Date(2020, 1, 5), "Wed"],
 		[new Date(2020, 1, 6), "Thu"],
-		[new Date(2020, 1, 7), "Fri"],
+		[new Date(2020, 1, 7), "Fri"]
 	];
 	const { timestamps, formattedTicks } = getTimestampsAndFormattedTicks(dataset);
 	const timeInterval = computeTimeIntervalName(timestamps);
@@ -178,7 +178,7 @@ it("should format ticks with timeInterval monthly", () => {
 		[new Date(2019, 11), "Dec"],
 		[new Date(2020, 0), "Jan 2020"],
 		[new Date(2020, 1), "Feb"],
-		[new Date(2020, 2), "Mar"],
+		[new Date(2020, 2), "Mar"]
 	];
 	const { timestamps: timestampsdefaultFormats, formattedTicks: formattedTicksdefaultFormats } =
 		getTimestampsAndFormattedTicks(datasetdefaultFormats);
@@ -199,7 +199,7 @@ it("should format ticks with timeInterval monthly", () => {
 		[new Date(2019, 11), "déc."],
 		[new Date(2020, 0), "janv. 2020"],
 		[new Date(2020, 1), "févr."],
-		[new Date(2020, 2), "mars"],
+		[new Date(2020, 2), "mars"]
 	];
 	const { timestamps: timestampsCustomFormats, formattedTicks: formattedTicksCustomFormats } =
 		getTimestampsAndFormattedTicks(datasetCustomFormats);
@@ -222,7 +222,7 @@ it("should format ticks with timeInterval quarterly", () => {
 		[new Date(2019, 5), `Q2`],
 		[new Date(2019, 7), `Q3`],
 		[new Date(2019, 10), `Q4`],
-		[new Date(2020, 0), `Q1 '20`],
+		[new Date(2020, 0), `Q1 '20`]
 	];
 	const { timestamps, formattedTicks } = getTimestampsAndFormattedTicks(dataset);
 	const timeInterval = computeTimeIntervalName(timestamps);
diff --git a/packages/core/src/services/time-series.ts b/packages/core/src/services/time-series.ts
index 7df553bcd7..673e97bf54 100644
--- a/packages/core/src/services/time-series.ts
+++ b/packages/core/src/services/time-series.ts
@@ -83,12 +83,13 @@ function getConsecutiveDifferences(elements: number[]): number[] {
 	return elements.slice(1).map((elem, i) => elem - elements[i]);
 }
 
-// Given a number, return the closest TIME_INTERVAL name
-function closestTimeIntervalName(ms: number): string {
-	const index = TIME_INTERVALS.reduce((acc, [key, value]: [string, number], i) => {
-		const previousSpan = Math.abs(acc - ms);
-		const currentSpan = Math.abs(value - ms);
-		return previousSpan < currentSpan ? acc : i;
+// Given a duration in ms, return the closest TIME_INTERVAL name
+function closestTimeIntervalName(duration: number): string {
+	const index = TIME_INTERVALS.reduce((nearestIndex, [intervalName, delta]: [string, number], i) => {
+		const deltaNearest = TIME_INTERVALS[nearestIndex][1] as number;
+		const oldNearestSpan = Math.abs(deltaNearest - duration);
+		const currentSpan = Math.abs(delta - duration);
+		return oldNearestSpan < currentSpan ? nearestIndex : i;
 	}, 0);
 	return TIME_INTERVALS[index][0] as string;
 }