<TimePicker
  value={value}
  onChange={setValue}
  timezone="America/New_York"
  label={'Rendered in "America/New_York"'}
/>
<TimePicker
  value={value}
  onChange={setValue}
  timezone="Europe/Paris"
  label={'Rendered in "Europe/Paris"'}
/>
<Typography>
  Stored value: {value == null ? 'null' : value.format()}
</Typography>