HarmonyOS date.getMonth() 比预期值少1

export function dateToMMDDPadLinkAsc(num: number, pad: string, link: string, asc: boolean): string { 
  const date = numToDate(num) 
  const mm = numberTo2Pad(date.getMonth(), pad) 
  const dd = numberTo2Pad(date.getDate(), pad) 
 
  if (DEBUG) { 
    console.info(TAG_COM, 'dateToMMDDPadLinkAsc', 
      'num:', dateToShortStr(num), 
      'date:', date, 
      'getMonth:', date.getMonth(), 
      'getDate:', date.getDate(), 
    ) 
  } 
 
  return asc ? `${mm}${link}${dd}` : `${dd}${link}${mm}` 
} 
 
export function numToDate(num: number) { 
  return new Date(num) 
}
06-30 18:33:55.671   10860-10860   I     CommonComponent dateToMMDDPadLinkAsc num: 06/30 18:33 date: Sun Jun 30 2024 18:33:55 GMT+0800 getMonth(): 5 getDate(): 30