Different results between Rails 6.0 and 6.1, tzinfo 2?

[pjb3]

I am working on upgrading from Rails 6.0 to Rails 6.1. I am getting different results when I do:

$ bin/rails c
Loading development environment (Rails 6.0.6.1)
>> require "solareventcalculator"
=> true
>> SolarEventCalculator.new(Date.parse("2022-05-02"), 39.275051, -76.647482).compute_official_sunset("US/Eastern")
=> Mon, 02 May 2022 20:00:00 -0400

Loading development environment (Rails 6.1.7.6)
>> require "solareventcalculator"
=> true
>> SolarEventCalculator.new(Date.parse("2022-05-02"), 39.275051, -76.647482).compute_official_sunset("US/Eastern")
=> Mon, 02 May 2022 00:00:00 +0000

I did notice that in my Gemfile.lock, tzinfo got upgraded from 1.2.11 to 2.0.6, so that might be the real issue.

Anyone know how to fix this?