constructor({ data }) {
    super({ name: 'tIME', data });
    const dv = new DataView(data);
    defineDataViewProperty(this, 'year', dv, 16, 0);
    defineDataViewProperty(this, 'month', dv, 8, 2);
    defineDataViewProperty(this, 'day', dv, 8, 3);
    defineDataViewProperty(this, 'hour', dv, 8, 4);
    defineDataViewProperty(this, 'minute', dv, 8, 5);
    defineDataViewProperty(this, 'second', dv, 8, 6);
  }
A tIME chunk gives the time of the last image modification.