Not a built-in way per-se, but you do have a handful of options. You can use a third party scheduling service like https://cron-job.org/. You could also use something like https://cloud.google.com/solutions/reliable-task-scheduling-... which uses Google App Engine and Cloud Pub/Sub. We actually have a sample that shows just this (HTTPS function using an external cron job service): https://github.com/firebase/functions-samples/tree/master/de...