export function datetimeStrToDate(dateTimeStr: string, targetTimeZone: string): string {
    const options: Intl.DateTimeFormatOptions = { timeZone: targetTimeZone, year: 'numeric', month: '2-digit', day: '2-digit' };
    const date = new Date(dateTimeStr);
    const convertedDateTimeStr = date.toLocaleDateString('en-US', options).split('/').reverse().join('-');
    return convertedDateTimeStr;
}