Wrong timezone calculated when using :host

[shanesmith]

Setting config.timezone.value = :host calculates in inverse of the correct timezone.

For example I'm in Eastern Time which is currently -4 (due to DST), however the VM gets set to the Abu Dhabi zone which is +4.

Taking a look at the line below I see that the calculated timezone is in fact inversed on purpose, but even with the comment I can't tell why that might be.

vagrant-timezone/lib/vagrant-timezone/config.rb

Line 29 in 33c3275

@value = format('Etc/GMT%+d', -(Time.now.utc_offset / 3600))

For what it's worth I do get -4 when running Time.now.utc_offset / 3600 in Ruby