Checking the timestamp of a node?

Is it possible to check the timestamp of a node via goal or other means? My containerized sandbox node occasionally falls out of sync with the current time requiring a restart

You can look at the sync time (it should be 0.0s) or at the current round and compare it to the round provided on an API service: Ecosystem Tools & Projects | Algorand Developer Portal

You can use the endpoint /v2/status or goal node status for that purpose