修改utc 档期开始的计算方式

src/utils/utcdate.util.ts

@@ -31,10 +31,9 @@ export function daysBetween(date1: Date, date2: Date) {
 
 // get begin of one day
 export const getDayBegin = (date: Date): Date => {
-  const year = date.getUTCFullYear()
-  const month = date.getUTCMonth()
-  const day = date.getUTCDate()
-  return new Date(year, month, day)
+  let result = new Date(date.getTime())
+  result.setUTCHours(0, 0, 0, 0)
+  return result
 }
 
 // get begin of n day ago