Date Parser with typescript

DateParser.ts

class DateParser {

    date: Date;
  
    constructor(date: string) {
        try {
            this.date = new Date(this.format(date));
        } catch (e) {
            throw e;
        }
    }
  
    getUnix() {
        return this.date.getTime() / 1000;
    }

    getDateTime() {
        return this.date.toUTCString();
    }

    private format(date: string) {
        let formatted = date.split(' ');

        if(formatted.length == 0)
            throw new Error('Date is invalid.');

        let onlyTime = formatted[0].split(':');
        let onlyDate = formatted[1].split('/');

        if(onlyDate.length != 3 || onlyTime.length != 3)
            throw new Error('Invalid date or time. Plase check and use the HH:mm:ss DD/MM/YYYY format');

        return Date.UTC(parseInt(onlyDate[2]), parseInt(onlyDate[1]), parseInt(onlyDate[0]), parseInt(onlyTime[0]), parseInt(onlyTime[1]), parseInt(onlyTime[2]));
    }

}

try {
    let date = new DateParser("23:30:00 18/10/2020");

    console.log('getDateTime:', date.getDateTime());
    console.log('getUnix:', date.getUnix());
} catch (e) {
    console.error('Error to use date.', e.message);
}