How to determine what day you were born?

[marydenay82]

what is module 7?

[underclassdamnriot]

it is read as MODULO 7, It is a DIVISION but you will only get the remainder. If the divisor is 7, the only range of possible remainders are (0 to 6). if MODULO 5, (0 to 4), if modulo 2 (0 & 1) always minus 1 to the highest range!!! get it, for example 21 mod 7 the quotient is 3, the remainder is 0 so 21 mod 7 = 0. Get it???

[underclassdamnriot]

^i am also confused at first when i am solving this but i got used to it so it's easy already. Why March is 2? look at the description, march's value is 2. 1990,19 is century here and 90 is year. k = 15. Simple as that then solve

[naruto64kun]

holy shit dude thanks a lot and i finally got it after going trough it over 10 times its tuesday!!!! even my mom confirmed it!!!!!!!! your awesome

[underclassdamnriot]

ok thanks for appreciating, i created a part 2 video for it, please watch, for example, your birtday is leap year, you either born on january or february, you will use this formula

d = (k + m - 2c + y - 2 + ydiv4 + cdiv4) mod 7

[naruto64kun]

whoa i think this works but its to hard for me to do

[underclassdamnriot]

so naruto64kun, i will explain it to you!!! for example your birthday is march 15, 1990, look at the description. March is 2, k = 15, y = 90, c = century then compute using the formula # 1 and substitute these values to the variables. Since your month is march. Div is a division, when you get the quotient, you will discard the decimal part. Mod is modulo aka remainder when you divide 2 numbers.

[naruto64kun]

cha...i spent like 20 mins trying to figure it out but im getting confused with the amount of years and skip years....some years have more days than others!!!