diff --git a/web/src/components/kit/DatePicker.tsx b/web/src/components/kit/DatePicker.tsx
index 89b027f2..5e73526e 100644
--- a/web/src/components/kit/DatePicker.tsx
+++ b/web/src/components/kit/DatePicker.tsx
@@ -12,14 +12,14 @@ import "@/less/common/date-picker.less";
 interface DatePickerProps {
   className?: string;
   isFutureDateDisabled?: boolean;
-  datestamp: DateStamp;
-  handleDateStampChange: (datestamp: DateStamp) => void;
+  datestamp: number;
+  handleDateStampChange: (datestamp: number) => void;
 }
 
 const DatePicker: React.FC<DatePickerProps> = (props: DatePickerProps) => {
   const t = useTranslate();
   const { className, isFutureDateDisabled, datestamp, handleDateStampChange } = props;
-  const [currentDateStamp, setCurrentDateStamp] = useState<DateStamp>(getMonthFirstDayDateStamp(datestamp));
+  const [currentDateStamp, setCurrentDateStamp] = useState<number>(getMonthFirstDayDateStamp(datestamp));
   const [countByDate, setCountByDate] = useState(new Map());
   const currentUsername = useUserStore().getCurrentUsername();
 
@@ -55,7 +55,7 @@ const DatePicker: React.FC<DatePickerProps> = (props: DatePickerProps) => {
     });
   }
 
-  const handleDateItemClick = (datestamp: DateStamp) => {
+  const handleDateItemClick = (datestamp: number) => {
     handleDateStampChange(datestamp);
   };
 
@@ -122,7 +122,7 @@ const DatePicker: React.FC<DatePickerProps> = (props: DatePickerProps) => {
   );
 };
 
-function getMonthDayAmount(datestamp: DateStamp): number {
+function getMonthDayAmount(datestamp: number): number {
   const dateTemp = new Date(datestamp);
   const currentDate = new Date(`${dateTemp.getFullYear()}/${dateTemp.getMonth() + 1}/1`);
   const nextMonthDate =
@@ -133,7 +133,7 @@ function getMonthDayAmount(datestamp: DateStamp): number {
   return (nextMonthDate.getTime() - currentDate.getTime()) / DAILY_TIMESTAMP;
 }
 
-function getMonthFirstDayDateStamp(timestamp: TimeStamp): DateStamp {
+function getMonthFirstDayDateStamp(timestamp: number): number {
   const dateTemp = new Date(timestamp);
   const currentDate = new Date(`${dateTemp.getFullYear()}/${dateTemp.getMonth() + 1}/1`);
   return currentDate.getTime();
diff --git a/web/src/helpers/datetime.ts b/web/src/helpers/datetime.ts
index 84900f1f..72683b08 100644
--- a/web/src/helpers/datetime.ts
+++ b/web/src/helpers/datetime.ts
@@ -5,7 +5,7 @@ export function convertToMillis(localSetting: LocalSetting) {
   return hoursToMillis;
 }
 
-export function getTimeStampByDate(t: Date | number | string): number {
+export function getTimeStampByDate(t: Date | number | string | any): number {
   return new Date(t).getTime();
 }
 
diff --git a/web/src/pages/DailyReview.tsx b/web/src/pages/DailyReview.tsx
index 17c0d46f..3b39bda6 100644
--- a/web/src/pages/DailyReview.tsx
+++ b/web/src/pages/DailyReview.tsx
@@ -83,7 +83,7 @@ const DailyReview = () => {
       });
   };
 
-  const handleDataPickerChange = (datestamp: DateStamp): void => {
+  const handleDataPickerChange = (datestamp: number): void => {
     setCurrentDateStamp(datestamp);
     toggleShowDatePicker(false);
   };
diff --git a/web/src/types/common.d.ts b/web/src/types/common.d.ts
index 91263426..f1d2f106 100644
--- a/web/src/types/common.d.ts
+++ b/web/src/types/common.d.ts
@@ -1,9 +1,5 @@
 type BasicType = undefined | null | boolean | number | string | Record<string, unknown> | Array<BasicType>;
 
-type DateStamp = number;
-
-type TimeStamp = number;
-
 type FunctionType = (...args: unknown[]) => unknown;
 
 interface KVObject<T = any> {
diff --git a/web/src/types/modules/memo.d.ts b/web/src/types/modules/memo.d.ts
index f09f4ce4..47e68475 100644
--- a/web/src/types/modules/memo.d.ts
+++ b/web/src/types/modules/memo.d.ts
@@ -6,11 +6,11 @@ interface Memo {
   id: MemoId;
 
   creatorUsername: string;
-  createdTs: TimeStamp;
-  updatedTs: TimeStamp;
+  createdTs: number;
+  updatedTs: number;
   rowStatus: RowStatus;
 
-  displayTs: TimeStamp;
+  displayTs: number;
   content: string;
   visibility: Visibility;
   pinned: boolean;
@@ -29,7 +29,7 @@ interface MemoCreate {
 
 interface MemoPatch {
   id: MemoId;
-  createdTs?: TimeStamp;
+  createdTs?: number;
   rowStatus?: RowStatus;
   content?: string;
   resourceIdList?: ResourceId[];
diff --git a/web/src/types/modules/resource.d.ts b/web/src/types/modules/resource.d.ts
index 0fd7618c..275e98dc 100644
--- a/web/src/types/modules/resource.d.ts
+++ b/web/src/types/modules/resource.d.ts
@@ -3,8 +3,8 @@ type ResourceId = number;
 interface Resource {
   id: ResourceId;
 
-  createdTs: TimeStamp;
-  updatedTs: TimeStamp;
+  createdTs: number;
+  updatedTs: number;
 
   filename: string;
   externalLink: string;
diff --git a/web/src/types/modules/user.d.ts b/web/src/types/modules/user.d.ts
index 8b273958..b5358d1e 100644
--- a/web/src/types/modules/user.d.ts
+++ b/web/src/types/modules/user.d.ts
@@ -4,8 +4,8 @@ type UserRole = "HOST" | "USER";
 interface User {
   id: UserId;
 
-  createdTs: TimeStamp;
-  updatedTs: TimeStamp;
+  createdTs: number;
+  updatedTs: number;
   rowStatus: RowStatus;
 
   username: string;