Incorrect transition into DST for America/New_York

As pointed at by @harsha-flipp in https://github.com/jmettraux/rufus-scheduler/issues/329

Given the script


#require 'rufus-scheduler'
require 'fugit'

# https://www.timeanddate.com/time/zone/usa/chicago
# https://www.timeanddate.com/time/change/usa/chicago

# https://www.timeanddate.com/time/zone/usa/newyork
# https://www.timeanddate.com/time/change/usa/newyork

#ENV['TZ'] = 'America/Chicago' # so that Time#to_s below stays in Chicago
ENV['TZ'] = 'America/New_York' # so that Time#to_s below stays in New York

c = Fugit.parse_cron('5 0 * * *')
#c = Fugit.parse_cron('30 4 * * *')

p [ :tz, ENV['TZ'] ]
p [ :ruby, RUBY_VERSION, RUBY_PLATFORM ]
p [ :tzinfo, TZInfo::VERSION ]
p [ :fugit, Fugit::VERSION ]

# into daylight saving time

puts

t = Time.parse('2021-03-10')
10.times do
  t = c.next_time(t)
  p t.to_s
end

# out of daylight saving time

puts

t = Time.parse('2021-11-05')
10.times do
  t = c.next_time(t)
  p t.to_s
end

America/Chicago yields the result below, which correctly goes into DST and out of it.

[:tz, "America/Chicago"]
[:ruby, "2.7.1", "x86_64-openbsd6.7"]
[:tzinfo, "2.0.4"]
[:fugit, "1.5.2"]

"2021-03-10 00:05:00 -0600"
"2021-03-11 00:05:00 -0600"
"2021-03-12 00:05:00 -0600"
"2021-03-13 00:05:00 -0600"
"2021-03-14 00:05:00 -0600"
"2021-03-15 00:05:00 -0500"
"2021-03-16 00:05:00 -0500"
"2021-03-17 00:05:00 -0500"
"2021-03-18 00:05:00 -0500"
"2021-03-19 00:05:00 -0500"

"2021-11-05 00:05:00 -0500"
"2021-11-06 00:05:00 -0500"
"2021-11-07 00:05:00 -0500"
"2021-11-08 00:05:00 -0600"
"2021-11-09 00:05:00 -0600"
"2021-11-10 00:05:00 -0600"
"2021-11-11 00:05:00 -0600"
"2021-11-12 00:05:00 -0600"
"2021-11-13 00:05:00 -0600"
"2021-11-14 00:05:00 -0600"

But for America/New_York

[:tz, "America/New_York"]
[:ruby, "2.7.1", "x86_64-openbsd6.7"]
[:tzinfo, "2.0.4"]
[:fugit, "1.5.2"]

"2021-03-10 00:05:00 -0500"
"2021-03-11 00:05:00 -0500"
"2021-03-12 00:05:00 -0500"
"2021-03-13 00:05:00 -0500"
"2021-03-14 00:05:00 -0500"
"2021-03-14 23:05:00 -0500" # the change happens but the TZ is still the same?
"2021-03-15 23:05:00 -0500"
"2021-03-16 23:05:00 -0500"
"2021-03-17 23:05:00 -0500"
"2021-03-18 23:05:00 -0500"

"2021-11-05 00:05:00 -0400"
"2021-11-06 00:05:00 -0400"
"2021-11-07 00:05:00 -0400"
"2021-11-08 00:05:00 -0500"
"2021-11-09 00:05:00 -0500"
"2021-11-10 00:05:00 -0500"
"2021-11-11 00:05:00 -0500"
"2021-11-12 00:05:00 -0500"
"2021-11-13 00:05:00 -0500"
"2021-11-14 00:05:00 -0500"

Also have to try with "30 4 * * *" as OP did.

floraison / fugit

Incorrect transition into DST for America/New_York #63