canvas

--Equipt Overlay Glasses & Clock Peripherals
local interface = peripheral.wrap("back")

--Canvas to draw objects on
local canvas = interface.canvas()
canvas.clear()

--Group box and text objects together
local iGroup = canvas.addGroup({0,50})
local rect = iGroup.addRectangle(0,0,180,32, 0x00FF002F)
local text = iGroup.addText({5,5}, "")
local dbg = iGroup.addText({5,15}, "")


local day
local tracker = 0
local flag = 0
local daysLeft


while true do
    day = interface.getDay()
    angle = math.floor(interface.getCelestialAngle() + 0.5)
    light = interface.getSkyLight()
    if day ~= tracker then
       tracker = day
       flag = 0
       --daysLeft = (36-day%36)
       --text.setText("Day: " .. day .. " | " .. daysLeft .. " Days to " .. tracker)
    end
    if (angle > 355 or angle < 5) then
        if light <= 8 then
            text.setText("Eclipse!")
            flag = 1
        end
    else
        text.setText("")
    end
    if (flag == 1 and angle > 95 and angle < 245) then
        text.setText("Get Ready for Holog")
    end
    dbg.setText("A: "..angle.."  L: "..light.."  F: "..flag.."  T: "..tracker)

    sleep(5)
end