A Conversation for Calculating the Day of the Week
grrrr
oscarella Started conversation Mar 31, 2009
Never having got on with numbers I was delighted that I could make this equation work. That is, except when it comes to my own birthday and I consistently discover that I am born on a thursday when a calendar tells me that I am, in fact, born on a tuesday.
But I can't see what I am doing wrong: 13 Jan 1976...
The century (19) will come to minus 35.
The year: 76*5=380/4=95 So 95 added to minus 35, I get 60
The month: in this equation Jan is 13 (+1) so 14*26=364/10=36, running total, then, is 96.
The day: 13+96=109
Dividing the total by 7 I get 15 (i.e 7*15=105) with a remainder of 4. And 4 means I am born on thursday, but the calendars say tuesday.
Can anyone explain where I am going wrong please? I would love to know, even if it means exposing my appalling maths!
grrrr
Icy North Posted Mar 31, 2009
Hi Oscarella 
In your case, you were born in the thirteenth month of 1975, not 1976.
Step 1: -35
Step 2: 75*5/4 = 93
Step 3: 36
Step 4: 13
Total: 107
107/7 = 15 remainder 2
2 -> Tuesday
Hope this helps!
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