Use the time and space machine on a ruler and send it back in time a pico second, then a millisecond, then a thousand, then a second, then a minute. You just have to calibrate with measurements first.

What if the Mondays span different months?

Like 8/19, 8/26, 9/2, 9/9?

Now the Mondays are on another page or they’re a swipe to the right