diff --git a/packages/next-common/components/charts/thresholdCurve/hooks/useInnerPoints.js b/packages/next-common/components/charts/thresholdCurve/hooks/useInnerPoints.js
index 015519b834..2f966b64c4 100644
--- a/packages/next-common/components/charts/thresholdCurve/hooks/useInnerPoints.js
+++ b/packages/next-common/components/charts/thresholdCurve/hooks/useInnerPoints.js
@@ -15,6 +15,9 @@ import { useBlockSteps } from "next-common/utils/hooks/referenda/detail/useRefer
 import { useMemo } from "react";
 import useChainOrScanHeight from "next-common/hooks/height";
 import useReferendumCurveData from "next-common/utils/hooks/referenda/detail/useReferendumCurveData";
+import useLatestBlockTime from "next-common/utils/hooks/useBlockTime";
+import useDecisionStartedTime from "next-common/utils/hooks/referenda/detail/useDecisionStartedTime";
+import { useChainSettings } from "next-common/context/chain";
 
 export default function useInnerPoints(labels) {
   const approvalThreshold = useApprovalThreshold();
@@ -42,13 +45,30 @@ export default function useInnerPoints(labels) {
 export function useCurrentHeightPoints() {
   const { supportData, approvalData, labels } = useReferendumCurveData();
   const currentHeight = useChainOrScanHeight();
+  const currentTime = useLatestBlockTime();
   const steps = useBlockSteps();
   const beginHeight = useBeginHeight();
+  const startedTime = useDecisionStartedTime();
+  const { assethubMigration } = useChainSettings();
+  const useTimeAxis = assethubMigration?.migrated;
 
   const xValue = useMemo(() => {
+    if (useTimeAxis && startedTime && currentTime) {
+      const index = Math.floor((currentTime - startedTime) / (3600 * 1000));
+      return Math.min(index, labels.length - 1);
+    }
+
     const index = Math.floor((currentHeight - beginHeight) / steps);
     return Math.min(index, labels.length - 1);
-  }, [beginHeight, currentHeight, labels.length, steps]);
+  }, [
+    useTimeAxis,
+    beginHeight,
+    currentHeight,
+    currentTime,
+    labels.length,
+    startedTime,
+    steps,
+  ]);
 
   const [, supportInnerPoint] = useSupportPoints(
     xValue,
diff --git a/packages/next-common/components/charts/thresholdCurve/referendaCurveChart/approvalBubbleArea/index.jsx b/packages/next-common/components/charts/thresholdCurve/referendaCurveChart/approvalBubbleArea/index.jsx
index 96c27223f6..b74ab7a891 100644
--- a/packages/next-common/components/charts/thresholdCurve/referendaCurveChart/approvalBubbleArea/index.jsx
+++ b/packages/next-common/components/charts/thresholdCurve/referendaCurveChart/approvalBubbleArea/index.jsx
@@ -8,19 +8,36 @@ import BubbleItem from "./bubbleItem";
 import useShowVoteActions from "next-common/hooks/useShowVoteActions";
 import { clamp, inRange, last } from "lodash-es";
 import { cn } from "next-common/utils";
+import { useTimelineData } from "next-common/context/post";
+import { useChainSettings } from "next-common/context/chain";
 
 export default function ApprovalBubbleArea(props) {
   const showVoteActions = useShowVoteActions();
-  if (!showVoteActions || !props.chartArea) {
+  if (
+    !showVoteActions ||
+    !props.chartArea ||
+    !props.historyApprovalData?.length
+  ) {
     return null;
   }
   return <ApprovalBubbleAreaImpl {...props} />;
 }
 
+function useDecisionStartedIndexer() {
+  const timeline = useTimelineData();
+
+  return (timeline ?? []).find((item) => item.name === "DecisionStarted")
+    ?.indexer;
+}
+
 const useApprovalBubbleData = (rangeData, historyApprovalData) => {
   const labelXLength = rangeData[1] - rangeData[0];
   const beginHeight = useBeginHeight();
   const blockStep = useBlockSteps();
+  const decisionStarted = useDecisionStartedIndexer();
+  const startedTime = decisionStarted?.blockTime;
+  const { assethubMigration } = useChainSettings();
+  const useTimeAxis = assethubMigration?.migrated;
 
   const { loading, voteActions } = useReferendumActions();
 
@@ -36,11 +53,16 @@ const useApprovalBubbleData = (rangeData, historyApprovalData) => {
       }
     };
     return voteActions
-      .sort((a, b) => a.indexer.blockHeight - b.indexer.blockHeight)
+      .sort((a, b) =>
+        useTimeAxis
+          ? a.indexer.blockTime - b.indexer.blockTime
+          : a.indexer.blockHeight - b.indexer.blockHeight,
+      )
       .map((item) => {
         const { data, type, who } = item;
-        const blockHeight = item.indexer.blockHeight;
-        const currentStep = (blockHeight - beginHeight) / blockStep;
+        const currentStep = useTimeAxis
+          ? (item.indexer.blockTime - startedTime) / (3600 * 1000)
+          : (item.indexer.blockHeight - beginHeight) / blockStep;
 
         return {
           data,
@@ -55,13 +77,15 @@ const useApprovalBubbleData = (rangeData, historyApprovalData) => {
         };
       });
   }, [
-    beginHeight,
-    blockStep,
     historyApprovalData,
     loading,
     labelXLength,
     rangeData,
     voteActions,
+    startedTime,
+    beginHeight,
+    blockStep,
+    useTimeAxis,
   ]);
 };
 
diff --git a/packages/next-common/components/charts/thresholdCurve/useHistoryTallyValueData.js b/packages/next-common/components/charts/thresholdCurve/useHistoryTallyValueData.js
index 59cf25a406..a3397762ac 100644
--- a/packages/next-common/components/charts/thresholdCurve/useHistoryTallyValueData.js
+++ b/packages/next-common/components/charts/thresholdCurve/useHistoryTallyValueData.js
@@ -7,7 +7,12 @@ import {
 import { useMemo } from "react";
 import { useReferendaTallyHistory } from "next-common/store/reducers/referenda/thresholdCurves";
 import { isEmpty } from "lodash-es";
+import useLatestBlockTime from "next-common/utils/hooks/useBlockTime";
+import useDecisionStartedTime from "next-common/utils/hooks/referenda/detail/useDecisionStartedTime";
 import useChainOrScanHeight from "next-common/hooks/height";
+import { useChainSettings } from "next-common/context/chain";
+
+const oneHour = 3600 * 1000;
 
 function calcFromOneTallyData(tally) {
   const { ayes, nays, support, issuance } = tally;
@@ -50,7 +55,8 @@ export function calcDataFromTallyHistory(
     const tally =
       tallyHistory.findLast(
         (tally) => tally.indexer.blockHeight <= iterHeight,
-      ) || last(tallyHistory);
+      ) ||
+      last(tallyHistory);
 
     let { currentSupport, currentApprove } = calcFromOneTallyData(tally.tally);
     historySupportData.push(currentSupport);
@@ -68,14 +74,71 @@ export function calcDataFromTallyHistory(
   };
 }
 
+export function calcDataFromTallyHistoryByTime(
+  tallyHistory,
+  startedTime,
+  latestTime,
+  rangeEndTime,
+) {
+  let historySupportData = [];
+  let historyApprovalData = [];
+  let historyAyesData = [];
+  let historyNaysData = [];
+  if (!tallyHistory || !startedTime || !latestTime || isEmpty(tallyHistory)) {
+    return {
+      historySupportData,
+      historyApprovalData,
+      historyAyesData,
+      historyNaysData,
+    };
+  }
+
+  const endTime = Math.min(latestTime, rangeEndTime);
+
+  let iterTime = startedTime;
+  while (iterTime <= endTime) {
+    const tally =
+      tallyHistory.findLast((item) => item.indexer.blockTime <= iterTime) ||
+      last(tallyHistory);
+
+    let { currentSupport, currentApprove } = calcFromOneTallyData(tally.tally);
+    historySupportData.push(currentSupport);
+    historyApprovalData.push(currentApprove);
+    historyAyesData.push(tally.tally.ayes);
+    historyNaysData.push(tally.tally.nays);
+    iterTime += oneHour;
+  }
+
+  return {
+    historySupportData,
+    historyApprovalData,
+    historyAyesData,
+    historyNaysData,
+  };
+}
+
 export default function useHistoryTallyValueData(totalHours) {
   const tallyHistory = useReferendaTallyHistory();
   const latestHeight = useChainOrScanHeight();
+  const latestTime = useLatestBlockTime();
   const blockStep = useBlockSteps();
   const beginHeight = useBeginHeight();
+  const startedTime = useDecisionStartedTime();
+  const { assethubMigration } = useChainSettings();
+  const useTimeAxis = assethubMigration?.migrated;
   const rangeEndHeight = beginHeight + blockStep * totalHours;
+  const rangeEndTime = startedTime + totalHours * oneHour;
 
   return useMemo(() => {
+    if (useTimeAxis) {
+      return calcDataFromTallyHistoryByTime(
+        tallyHistory,
+        startedTime,
+        latestTime,
+        rangeEndTime,
+      );
+    }
+
     return calcDataFromTallyHistory(
       tallyHistory,
       beginHeight,
@@ -83,5 +146,15 @@ export default function useHistoryTallyValueData(totalHours) {
       blockStep,
       rangeEndHeight,
     );
-  }, [tallyHistory, beginHeight, latestHeight, blockStep, rangeEndHeight]);
+  }, [
+    useTimeAxis,
+    tallyHistory,
+    startedTime,
+    latestTime,
+    rangeEndTime,
+    beginHeight,
+    latestHeight,
+    blockStep,
+    rangeEndHeight,
+  ]);
 }
diff --git a/packages/next-common/utils/hooks/referenda/detail/useDecisionStartedTime.js b/packages/next-common/utils/hooks/referenda/detail/useDecisionStartedTime.js
new file mode 100644
index 0000000000..8b8876cfb9
--- /dev/null
+++ b/packages/next-common/utils/hooks/referenda/detail/useDecisionStartedTime.js
@@ -0,0 +1,11 @@
+import { useMemo } from "react";
+import { useTimelineData } from "next-common/context/post";
+
+export default function useDecisionStartedTime() {
+  const timeline = useTimelineData();
+
+  return useMemo(() => {
+    return (timeline ?? []).find((item) => item.name === "DecisionStarted")
+      ?.indexer?.blockTime;
+  }, [timeline]);
+}