diff --git a/src/pages/Cluster/ClusterWells.jsx b/src/pages/Cluster/ClusterWells.jsx
index 57457b3..520c54f 100644
--- a/src/pages/Cluster/ClusterWells.jsx
+++ b/src/pages/Cluster/ClusterWells.jsx
@@ -55,6 +55,13 @@ export default function ClusterWells({statsWells}) {
       if (!filtersWellsType.some((el) => el.text === well.wellType))
         filtersWellsType.push({ text: well.wellType, value: well.wellType,})
 
+      let periodPlanValue = well.total?.plan?.start && well.total?.plan?.end
+                            ? (new Date(well.total?.plan?.end) - new Date(well.total?.plan?.start)) / DAY_IN_MS
+                            : '-'
+      let periodFactValue = well.total?.fact?.start && well.total?.fact?.end
+                            ? (new Date(well.total?.fact?.end) - new Date(well.total?.fact?.start)) / DAY_IN_MS
+                            : '-'
+
       return {
         key: well.caption,
         id: well.id,
@@ -62,8 +69,8 @@ export default function ClusterWells({statsWells}) {
         wellType: well.wellType,
         factStart: well.total?.fact?.start,
         factEnd: well.total?.fact?.end,
-        periodPlan: (new Date(well.total?.plan?.end) - new Date(well.total?.plan?.start)) / DAY_IN_MS,
-        periodFact: (new Date(well.total?.fact?.end) - new Date(well.total?.fact?.start)) / DAY_IN_MS,
+        periodPlan: periodPlanValue,
+        periodFact: periodFactValue,
         rateOfPenetrationPlan: well.total?.plan?.rop,
         rateOfPenetrationFact: well.total?.fact?.rop,
         routeSpeedPlan: well.total?.plan?.routeSpeed,
@@ -91,7 +98,9 @@ export default function ClusterWells({statsWells}) {
     setTableData(data)
   }, [statsWells])
 
-  const getDate = (str) => Number.isNaN(+new Date(str)) ? '-' : new Date(str).toLocaleString()
+  const getDate = (str) => Number.isNaN(+new Date(str)) || +new Date(str) === 0
+                           ? '-'
+                           : new Date(str).toLocaleString()
 
   const columns = [
     makeTextColumn('скв №', 'caption', null, null,