Error when getting "long" name for timeZone Etc/UTC

[dcRUSTy]

new Intl.DateTimeFormat('en', {
timeZone: 'Etc/UTC',
timeZoneName:'long',
year: 'numeric',
month: 'numeric',
day: 'numeric',
hour: 'numeric',
minute: 'numeric',
}).format(new Date())

throws error "Error: unsupported value "long" for timeZone Etc/UTC. requires locale data for en-US" in IE 11