discord bot repeat 15min

console.log("Hello!");
const Discord = require("discord.js");
const bot = new Discord.Client();
const talkedRecently = new Set();
var cooldowns = {}
var minute = 60000;
var hour = minute * 24;

bot.login("token bot")

bot.on('ready', () => { var channel = bot.channels.get("channel ID").send("!cauvong role name");
})

bot.on("message", (message) => {
    if (message.content == "!cauvong **@Role Name**") {
        setTimeout(function(){
            bot.channels.get("channel ID").send("!cauvong role name");
        }, 900000);
    }
});