Unfortunately there is not a way to navigate to a date screen on the device with the heart rate and time watch face that is selected. There is the alternative of setting the watch face to display the time and date. This will allow easy access to the heart rate widget by swiping the screen, the widget will display your current heart rate data.
Can you please pass along to the firmware developers that it would be helpful to have the “more info” single-tap on the watch face screen bring up the date, so people can have whatever watch face they like and still be able to get the date?
By “more info” single-tap I mean like when you tap on the steps screen and it shows you yesterday’s steps, or when you tap on the heart rate screen and it shows you a graph of the last hour.
I’ll keep my fingers crossed that maybe I’ll see this in a future update!