local function Format()
string.format("%d:%02d:%02d:%02d", seconds/86400%7, seconds/3600%24, seconds/60%60, seconds%60)
local UnixTimestamp = 00000 --Insert the Unix timestamp of when the countdown ends.
while true do --This will loop your countdown so it's updated.
local Seconds = UnixTimestamp - os.time() --This is where we do our countdown.
wait(1) --This is the time your countdown will be updated.
Your data can always be updated and changed as well! You can do this by replacing: print(Format(Seconds)) and the format function. Some examples can be using NumberValues, often referred to as IntValues, or using this on GUI (In the case you do GUI, do NOT remove the format functions, yet change the value of the text label with proper formatting).