const convertTimezone = (date: string): Date => { const d = new Date(date); const utc = d.getTime() + (d.getTimezoneOffset() + 540) * 60000; return new Date(utc); };
확인해볼것 getTimezoneOffset
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/getTimezoneOffset
540 = 60분 9 600000 = 60초 1000(ms) = 분단위