如何根据运营时间确定业务是否开放（Swift-iOS）

I have an app that I'm building in Swift that needs to determine if a store/restaurant is currently open. It queries a database that I have control of, so I can set the open hours however I'd like. Currently I have an openTime/closeTime column for each day of the week set as a timestamp. For example: MonOpen = 11:00, MonClose = 19:00.I have an app that I'm building in Swift that n