How do you tell time with a sundial when it is cloudy?

To tell time with a sundial when it is cloudy, you can use the position of the sun when it briefly breaks through the clouds, if possible. Alternatively, you might estimate the time based on the general angle of the sun, which can be determined by knowing its typical path across the sky. However, without clear sunlight, a sundial becomes unreliable, and it's advisable to use a different method, like a clock or watch, for accurate timekeeping.