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Nicolino
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Quote:
On 2012-01-27 18:51, stanalger wrote:
Hans-Christian was referring to this:
http://www.cs.umsl.edu/~astanger/DayOfWeek.pdf
You can find instructions in Hans-Christian's definitive "Encyclopedia of Weekday Calculation."
No calculator required. It's pure "look-up." AND it easily handles ANY date, Julian OR Gregorian.

Al Stanger

Wow, Mr. Stanger himself is posting!
I'm honored to have received an email from him and can't show enough respect for his beautiful Hopscotch method! I really dig it and want to perpetuate (no pun intended!) it by creating a large acrylic version of it!
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I'm flattered, Nicolino. But let's get back to Scott Cram's Day One!

Al
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Hi

Am now at 6 days and averaging 5-7 seconds so very near to my 5 second goal. The 5 seconds are really now just auto-recall the 7 seconds are the ones where I am still having to think a little bit Smile

This does pose a question for me - If I have 3 that I know I am 'struggling' (and I use that in the lightest sense) with, at this stage, should I look at a new Mnemonic, or should I stick with what I have gone with and push through?

Respect to all
Steve
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Quote:
On 2012-01-30 06:08, mag1cman wrote:
Hi

Am now at 6 days and averaging 5-7 seconds so very near to my 5 second goal. The 5 seconds are really now just auto-recall the 7 seconds are the ones where I am still having to think a little bit Smile

This does pose a question for me - If I have 3 that I know I am 'struggling' (and I use that in the lightest sense) with, at this stage, should I look at a new Mnemonic, or should I stick with what I have gone with and push through?

Respect to all
Steve


Dear Steve,
When you say 5-7 seconds, do you mean the time to find the correct day to fill the calendar page, or the time to find the actual day for a precise date, without any printed calendar? I am at about 10 sec to find the correct day for a precise date. For instance, they say me "May 19, 1347", and I need about 10 sec to say "friday".
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hcs
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May 19, 1347 was a Saturday.
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Quote:
On 2012-01-30 11:46, hcs wrote:
May 19, 1347 was a Saturday.


Wrong!! It was a Friday Smile
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The Gregorian Calendar is not a proleptic one. On October 15th 1582 Pope Gregory XIII introduced the Gregorian calendar. October 4, 1582 of the Julian calendar was followed by October 15 in the new calendar. The Gregorian calendar was adopted on 14 September 1752 in Britain and the British Empire (including parts of the later United States).

May 19 1347 was a Saturday regardless of which christian country.
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Quote:
On 2012-01-30 11:31, doriancaudal wrote:

Dear Steve,
When you say 5-7 seconds, do you mean the time to find the correct day to fill the calendar page, or the time to find the actual day for a precise date, without any printed calendar? I am at about 10 sec to find the correct day for a precise date. For instance, they say me "May 19, 1347", and I need about 10 sec to say "friday".


Yes I mean 5-7 seconds to give a day without writing out the days using a blank calendar.

Respect to all
Steve
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doriancaudal
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Quote:
On 2012-01-30 12:09, hcs wrote:
The Gregorian Calendar is not a proleptic one. On October 15th 1582 Pope Gregory XIII introduced the Gregorian calendar. October 4, 1582 of the Julian calendar was followed by October 15 in the new calendar. The Gregorian calendar was adopted on 14 September 1752 in Britain and the British Empire (including parts of the later United States).

May 19 1347 was a Saturday regardless of which christian country.


Ok, so how to deal with that with Scott's method?

Another question for Steve, concerning the last step we have to do to find the actual day for a date. Let's say you know that March 7 is a friday, and you need to answer for March, 18, how do you do that quickly? It's here that I loose some time I think (14 is a friday too, sat 15, sun 16, mon 17 and Tuesday 18: which takes me about one sec to do)...
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Hi Dorian

I think it's just down to the speed that I do the mental math at.

If it's faster I also go past and backwards so in the example that you give if I know that 7 is a Friday and I want the 18 I KNOW that 21 is a Friday and go backwards to 18 - This is one step less than your counting up - one step could be 1/2 a second in this case. How I know to go below and count up or go past and count back I'm not sure and I put this down to gut instinct.

The other thing that I think that I do isn't related to my effort learning this effect, it is something that I have done since I was a kid and I now do with my kids which is 'Day Maths'.

So in my head Monday = 1, Tuesday = 2 etc. I am always asking my kids What does Monday + Wednesday + Saturday - Tuesday come to? They answer "8" BUT we also ask questions like what is Friday + Tuesday - 3 + Sunday - 5 = 6

So in my world (or my head) if the Doomsday date of 7 = Friday therefore 21 INSTANTLY = Friday - 3 (to get to 18) INSTANTLY = Tuesday. Because doing "Day Math" I know that Friday - 3 = Tuesday.

Hope that this helps.

Respect to all
Steve
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Quote:
On 2012-01-30 13:13, mag1cman wrote:

So in my head Monday = 1, Tuesday = 2 etc. I am always asking my kids What does Monday + Wednesday + Saturday - Tuesday come to? They answer "8" BUT we also ask questions like what is Friday + Tuesday - 3 + Sunday - 5 = 6

So in my world (or my head) if the Doomsday date of 7 = Friday therefore 21 INSTANTLY = Friday - 3 (to get to 18) INSTANTLY = Tuesday. Because doing "Day Math" I know that Friday - 3 = Tuesday.

Hope that this helps.

Respect to all
Steve


Perhaps Scott could write us a little Web App that would fire simple "Day Math" questions at us e.g. Friday - 4 = ? to help people get practised in the deduction of one day from another?

Respect to all
Steve
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Quote:
On 2012-01-30 13:16, mag1cman wrote:

Perhaps Scott could write us a little Web App that would fire simple "Day Math" questions at us e.g. Friday - 4 = ? to help people get practised in the deduction of one day from another?

Respect to all
Steve


The app that I think is missing in all the wonderful work Scott did is an app that would ask for a date, and would need a day as an answer, not a complete month to fill by placing the doomsday in front of the right number. Do you guys see what I mean?
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[quote]On 2012-01-30 13:19, doriancaudal wrote:
Quote:
The app that I think is missing in all the wonderful work Scott did is an app that would ask for a date, and would need a day as an answer, not a complete month to fill by placing the doomsday in front of the right number. Do you guys see what I mean?


My free web app does exactly this and also calculates your times and errors.

http://www.mindmagician.org/daydate.aspx

My Speed Dating ebook (which teaches a completely different method from Scott's) includes a version of this testing app that will run without an internet connection.

http://www.lybrary.com/speed-dating-p-119767.html

Mike
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A better title for the "Calendar Quiz" app would be Doomsday Month Calendar Quiz.

@ doriancaudal
Calculation of Julian Calendar Doomsday: see Solka's "Encyclopedia of Weekday Calculation", p. 161.
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Scott Cram
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Quote:
On 2012-01-29 09:45, doriancaudal wrote:

Thanks Scott! I am waiting for Chris to email me the new version Smile


As the purchasers have probably already discovered, the updated version is now available at Lybrary.com.

Quote:
On 2012-01-30 13:05, doriancaudal wrote:
Quote:
On 2012-01-30 12:09, hcs wrote:
The Gregorian Calendar is not a proleptic one. On October 15th 1582 Pope Gregory XIII introduced the Gregorian calendar. October 4, 1582 of the Julian calendar was followed by October 15 in the new calendar. The Gregorian calendar was adopted on 14 September 1752 in Britain and the British Empire (including parts of the later United States).

May 19 1347 was a Saturday regardless of which christian country.


Ok, so how to deal with that with Scott's method?

Another question for Steve, concerning the last step we have to do to find the actual day for a date. Let's say you know that March 7 is a friday, and you need to answer for March, 18, how do you do that quickly? It's here that I loose some time I think (14 is a friday too, sat 15, sun 16, mon 17 and Tuesday 18: which takes me about one sec to do)...


As with the rest of Day One, I handle it very simply - I never go back beyond 1800 (since the Gregorian calendar wasn't adopted in the US until 1752).

Here's an excellent timeline of when various countries adopted it:
http://en.wikipedia.org/wiki/Gregorian_calendar#Timeline

Adjusting to the Julian calendar can be somewhat tricky, so the simplest approach is just to avoid it altogether. Since you're trying to make the calendar you create meaningful anyway, sticking to anniversaries, birthdays, and other special days will keep you well within the 1900s and 2000s for now.

Quote:
On 2012-01-30 13:16, mag1cman wrote:
[
Perhaps Scott could write us a little Web App that would fire simple "Day Math" questions at us e.g. Friday - 4 = ? to help people get practised in the deduction of one day from another?

Respect to all
Steve


The "Day Math" questions is interesting, as I'm working on a book of related feats for Day One, and this type of math will be needed. I guess I'll have to add a web app for it! Smile

(Yes, this would be provided at no extra charge as an update.)

Handy tip, to go from one day of the week to another day of the week, you should never need to go back or forth more than 3 days. Friday - 4 is more easily performed as Friday + 3, since you'll get the same day of the week.

Quote:
On 2012-01-30 13:19, doriancaudal wrote:

The app that I think is missing in all the wonderful work Scott did is an app that would ask for a date, and would need a day as an answer, not a complete month to fill by placing the doomsday in front of the right number. Do you guys see what I mean?


With Day One, you shouldn't have to do any math concerning the date.

The advantage of creating the calendar is that you have the whole month in front of you, and then you just FIND the 18th (or whatever) and see what day it's on as you circle it!

Think of it as creating a cheat sheet that you can openly use in front of your audience.

If you do want to be quizzed on a particular day, you can do so at the site Michael mentions above...
http://www.mindmagician.org/daydate.aspx

...or at my own site, as well:
http://gmmentalgym.blogspot.com/2011/03/......sed.html

As long as I'm working on new web apps anyway, I might be able to develop one like that, however. Is there any other interest?

Quote:
On 2012-01-30 16:28, hcs wrote:
A better title for the "Calendar Quiz" app would be Doomsday Month Calendar Quiz.

@ doriancaudal
Calculation of Julian Calendar Doomsday: see Solka's "Encyclopedia of Weekday Calculation", p. 161.


True, but space was at a premium in the notes and on the screen.

Here on the forums, "Doomsday Month Calendar Quiz" might be a clearer way to refer to it, however.
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Handy calendar trivia for all those performing "Day One" in 2012:

2012 has 3 Friday the 13ths.

The first one was back in January.

The next one is in April, exactly 13 weeks later.

The final one is in July, exactly 13 weeks after April's Friday the 13th.

This will happen again in 2040, 2068, and 2096.
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The next 3 Fridays the 13ths - but in February, March and November - will be in 2015. 3 Fridays the 13ths are the maximal number in a year. Minimum between 2 Fridays the 13ths are 4 weeks. Maximum are 61 weeks.
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I'm working on an update for "Day One".

The update will consist of updated versions of the web apps, so that they work on more mobile devices, an additional book containing several bonus feats, and a new web app to help you practice the bonus feats.

It's almost done, so you can expect to see this update as soon as next week.
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Great work, Scott! Thanks!!
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Nice! Continue with your great work, Scott Smile
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