The number is 255 136 140 250.
Just memorize it in your own way, doesnt it look like an IP Address?
Each digit represents a month 255 136 140 250, check below :
2 -> January
5 -> February
5 -> March
1 -> April
3 -> May
6 -> June
1 -> July
4 -> August
0 -> September
2 -> October
5 -> November
0 -> December
Now, You want to find the day of the week for 10th October 2014.
1. Month – October, so digit value is -> 2
2. Now Add the Date to it, which is 10 -> 10 + 2(october month value) = 12
3. Now divide 12 by 7,
12/7 -> Quotient = 1 and Remainder = 5
4. Remainder is 5, now see below what 5 digit means :
0 -> Sunday
1 -> Mon
2 -> Tues
3 -> Wed
4 -> Thur
5 -> Friday
6 -> Saturday
The Value of 5 is Friday, so 10th October 2014 Week Day is Friday. Check Calendar.
Now, what is the Number for 2015 ? Simple 366 240 251 361, How?
Check When does 1st day starts in each month in 2015 – say January 1st on Thursday so number is 4 Minus 1 = 3, February 1st on Sunday so number is 0 – 1 = 6(look above), March 1st on Sunday so number is 0 – 1 = 6 so on..,
Simply follow above method for every year and just remember 12 digit number.
I learnt this from one of my friend, If you have any questions I am happy to answer, put in comments section below.