I'm new to discord js and trying to make my bot send a message at a specific time (set via timestamp).

client.on('ready', function(e) 
{
console.log(`Logged in as ${client.user.tag}!`)

let scheduledMessage = new cron.CronJob('0 10 15 * * *', () => {
    const guild = client.guilds.cache.get('ID');
    const channel = client.channels.cache.get('ID');

    const exampleEmbed = new MessageEmbed()
    .setColor('#ebdc05')
    .setTitle('Another ten minutes')
    channel.send({ embeds: [exampleEmbed] });
});

scheduledMessage.start() 
});

I found this method that sends a message at 15:10:00. My problem is that I would need the bot to send the message every 31 hours.

I also found the method to write '0 0 */31 * * *' instead of '0 10 15 * * *'. And that works, every 31 hours a message would be sent, but I'm afraid my bot sometimes could send the message a bit after the 31-hour mark and just add up seconds and minutes after time, that at some point it sends the message at like 15:12:00 or sth.

So I came up with the idea to just make a timestamp, and add the time to always have the 31 hours, then let the bot send the message at the exact timestamp. Sadly, I found nothing to that problem.

Is that even possible?

Edit: The timestamp variant would be useful because I can subtract and add time to that very easily and also show it in an embed.