Add an hourglass

Crafted with this recipe (https://ibb.co/PG9Swkd), the hourglass would be a mostly decorative block, but that could be used to record the passage of time. Also, you can use red sand or concrete powder instead of sand to craft a more colorful hourglass. Right clicking the hourglass would turn it upside down, reseting it. The hourglass' sand would fall completely to the bottom after 10 real life minutes, or half an in-game day. The hourglass' process could be detected by comparators. Stacking multiple hourglasses on top of each other would make the process longer by 10 minutes per additional hourglass (right-clicking to turn it upside down will turn the entire column upside down too), comparators would only take signal from the bottom one though.