Prints Roblox registration dates of all players on server

getRegistraionDates.lua

local players = game:GetService("Players"):GetPlayers()
for _, player in pairs(players) do
	local registrationTimestamp = (os.time() - player.AccountAge * 86400)
	local registrationDateString = os.date("%Y-%m-%d", registrationTimestamp)
	print(player.Name, registrationDateString)
end