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The Thumb Calendar

thumbcalendar.com

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Re: The Thumb Calendar

#15
I had a Casio calculator that could show calendars like this. It could also play do-re-mi when you pressed digits and you could set an alarm with a jolly tune. And when I pressed the square root key repeatedly, the number got smaller and smaller until it showed 1. This was the 80s and it was my most precious thing.

Re: The Thumb Calendar

#16
post #15

I had a Casio calculator that could show calendars like this. It could also play do-re-mi when you pressed digits and you could set an alarm with a jolly tune. And when I pressed the square root key repeatedly, the number got smaller and smaller until it showed 1. This was the 80s and it was my most precious thing.

>the number got smaller and smaller until it showed 1

Integer or floating point?

Re: The Thumb Calendar

#17

I'm curious, when would you use this? As far as I can recall, the only time I need to know day-of-month is when scheduling and I need my actual calendar with existing appointments for that.

It's handy to know if some date is a weekend or not. Or some specific day of the week where you're generally busy.

Or to check where Christmas falls or something like that.

Ultimately it's a little thing to keep in your wallet. Not something to replace an appointment diary.

Re: The Thumb Calendar

#19
post #5

Earlier quoted context omitted.

No need to guess, the very first header is 'How It Works'..

that's not a visual guide, and the thumbs along with above and below mentioned are confusing.

Your thumbs run vertically along the sides of the card, parallel to each other. You use them to cover anything to the sides of the month header(/footer) you're looking at. I think it's that "not under or above" description from the link that's confusing.

Find the header/footer for the right month. Use your thumbs to cover everything to the right or left.

Re: The Thumb Calendar

#20
post #17

I'm curious, when would you use this? As far as I can recall, the only time I need to know day-of-month is when scheduling and I need my actual calendar with existing appointments for that.

It's handy to know if some date is a weekend or not. Or some specific day of the week where you're generally busy. Or to check where Christmas falls or something like that. Ultimately it's a little thing to keep in your wallet. Not something to replace an appointment diary.

Check out the Doomsday Rule.

https://en.wikipedia.org/wiki/Doomsday_rule

I learned this years ago and it is life changing. It can be used to figure out the day of the week of any day in a couple seconds.

For example, the rule immediately tells me that Boxing Day is a Tuesday[0], so I know Christmas falls on a Monday this year.

[0] as does 3/14, 4/4, 5/9, 6/6, 7/4, 7/11, 8/8, 9/5, 10/10, 10/31, 11/7, and 12/12 since those anchor points are always on the same “doomsday”. Based on that, any day is just a little bit of addition/subtraction.

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