At the moment the latest/max oplog timestamp can be retrieved via the Atlas UI in the backups section for point in time restores. This feedback post is to make this information available as part of the atlas administration api.

For example, in the UI it states:

You can only restore up to this oplog timestamp: 1692580549 and this increment: 1.

Would be good to have this value available to be retrieved via the API for restores requiring oplog timestamp values in this format.