Incorrect result when parsing time in a timezone

[createthis]

Repro steps:

import moment from 'moment-timezone';
import tk from 'timekeeper';
tk.freeze(moment('2020-06-19T20:00:00-04:00').toDate());
console.log('now=',moment().format());
const eight_pm_today = moment.tz('8:00 PM', 'h:mm A', 'America/New_York');
console.log('eight_pm_today=',eight_pm_today.format());

Result:

now= 2020-06-19T20:00:00-04:00
eight_pm_today= 2020-06-20T20:00:00-04:00

Expected Result:

now= 2020-06-19T20:00:00-04:00
eight_pm_today= 2020-06-19T20:00:00-04:00

(eight_pm_today is showing as the 20th rather than the 19th)

[ichernev]

This is a duplicate of #874 (well the other way around, but I already commented on the other one ;-))