It was 5:20 a.m. and I was finishing my second cup of coffee when it dawned on me – the question:
How many birthdays have I had on the same day of the week as my date of birth?
In resolution, using this weekday calendar, I laboriously set about to record the years in which I had a birthday on the Sabbath, being born on a Sunday.
Granted, this number of same days of the week may be of minimal interest, yet I did observe a pattern. So, I checked a few other sample birthdates to substantiate the following conclusion:
With the exception of February 29th, every birthdate, on any given day of the week, recurs on that day of the week in accordance with the following pattern of years…
↱ 6 · 11 · 6 · 5 ↲
So, if your birthday on the same day of the week as your date of birth initially occurs at age 11, it then recurs at intervals of 6, 5, 6 and 11 years, as a repeating loop.
Also, if by chance you happened to be born in a leap year on February 29th, your next calendar birthday of February 29th – on the same day of the week as your birthdate – will occur in a cycle every 28 years.
You may say that I’ve got too much time on my hands, but cut me some slack – and cake – as today is my birthday. Happy birthday, me!
This geometric image features an offset typographic display with texture, and a limited color palette. It’s available in my shop on a variety of interesting products, ranging from apparel to home decor and accessories. Stop by today and see what you can find!
Enjoy this abstract graphic design with twelve hour glasses depicting the sands of time. Prints and more are available with this design – simply visit my shops at Pixels, ArtFlakes and/or ArtPal. And, take you time – you might discover some really cool stuff.
With a built-in hook on the back for easy hanging, this wall clock features an infinite days of the week design and would be a great addition to your home or office! Select between a bamboo wood frame with natural finish, or painted black or white. Hand colors include black, white, red and aqua. Batteries not included. Enjoy!