'Last loaded/refreshed' time on page

Hi, I use the app/site a lot, thank you. Can I request that you add a 'page last refreshed' timestamp at the top of the page/app please? When there are network issues, or when you're refreshing for the latest update, it'd be useful to know if what you're seeing is the most up to date info. (I'd put it between the drop-down station selector and the refresh button at the top.) Thanks!