diff --git a/src/utils/dateUtil.ts b/src/utils/dateUtil.ts
index 8f8a0ab..5215e06 100644
--- a/src/utils/dateUtil.ts
+++ b/src/utils/dateUtil.ts
@@ -3,10 +3,10 @@ import { format } from 'date-fns';
 const DATE_TIME_FORMAT = 'YYYY-MM-DD HH:mm';
 const DATE_FORMAT = 'YYYY-MM-DD ';
 
-export function formatToDateTime(date: null, formatStr = DATE_TIME_FORMAT): string {
+export function formatToDateTime(date: Date | number, formatStr = DATE_TIME_FORMAT): string {
   return format(date, formatStr);
 }
 
-export function formatToDate(date: null, formatStr = DATE_FORMAT): string {
+export function formatToDate(date: Date | number, formatStr = DATE_FORMAT): string {
   return format(date, formatStr);
 }