Are the dyno restarts on Heroku simultaneous?

Question

I read on Herokus website that dynos will be restarted about every 24 hours.
If you have for example two web-dynos is there a chance that they will be restarted simultaneously?

Thanks for your time!

Answer 1

According to heroku:

"The cycling happens once every 24 hours (plus up to 216 random minutes, to prevent every dyno for an application from restarting at the same time)."

Source: https://devcenter.heroku.com/articles/dynos

Answer 2

Heroku restarts dynos randomly -- sometimes multiple times per day. Don't count on it being simultaneous!