How to make a timed door that slides open and closed?

I have tried many timed doors and none of them work I don't have a script for timed doors but I do have a script for day / night cycle I want the door to slide open for 5 minutes after a minute into the day Script for day / night cycle

local dayLength = 20

local cycleTime = dayLength*60
local minutesInADay = 24*60

local lighting = game:GetService("Lighting")

local startTime = tick() - (lighting:getMinutesAfterMidnight() / minutesInADay)*cycleTime
local endTime = startTime + cycleTime

local timeRatio = minutesInADay / cycleTime

if dayLength == 0 then
    dayLength = 1
end

repeat
    local currentTime = tick()

    if currentTime > endTime then
        startTime = endTime
        endTime = startTime + cycleTime
    end

    lighting:setMinutesAfterMidnight((currentTime - startTime)*timeRatio)
    wait(1/15)
until false

the 20 is how many minutes the day / night is