Which
day of the week were you born on? Find the day of the
week for any date... Fill in the date you want to check then
click "Get Date" In
quale giorno della settimana sei nato? Per sapere in quale
giorno della settimana cade una data basta compilare il modulo
e premere "Get Date"
Easter
falls on... Pasqua
cade
il...
Year/Anno
Perpetual
Calendar 2 (tables)
By means of the tables below, you can determine the day of
the week for specific dates that might be of your interest.
Just follow the easy instructions. First, locate the
number at the intersection of the month
column and day row in
the table 1 (example: the column for June and the row
for day 16th cross at the number 6). Then, locate the
number at the intersection of the year
column and century row in
the table 2 (example: the column for year 77th and the
row for century 18th cross at the number 3). Finally,
locate in table 3 the letter at the intersection of both
numbers you've found (here, numbers 6 and 3 cross at
D). The letter D corresponds to Saturday (if the day
of the week you're looking for is in January or February
of a leap year, you have to bring forward of 1 day the
result).
Per
trovare un giorno della settimana, cercate nella tabella
1 il numero segnato dall'incontro della colonna
dei mesi e della linea dei
giorni; poi, nella tabella 2, il numero all'incrocio
della colonna degli anni e
della linea dei secoli...
Infine, nella tabella 3, la lettera che si trova all'incontro
delle due linee contrassegnate dai numeri che avete trovato.
Ogni lettera corrisponde ad un giorno.
Perpetual
Calendar 3 (calculate it!)
The
following formula - named Zeller's Rule -
allows you to calculate a day of the week for any date:
F
= k + [(13 x m-1)/5] + D + [D/4] + [C/4] - 2 x C
k is
the day of the month. Let's use January 27, 2024 as an example.
For this date, k = 27. m is the
month number. Months have to be counted specially: March is
1, April is 2, and so on to February, which is 12 (this makes
the formula simpler, because on leap years February 29 is counted
as the last day of the year). Because of this rule, January and February are
always counted as the 11th and 12th months of
the previous year. In our example, m = 11. D is the
last two digits of the year. Because of the month numbering,
D = 23 in our example, even though we are using a date from
2024. C stands
for century: it's the first two digits of the year. In our
case, C = 20.
Now
let's substitute our example numbers into the formula:
F = k + [(13 x m-1)/5] + D + [D/4] + [C/4] - 2 x C
= 27 + [(13 x 11-1)/5] + 23 + [23/4] + [20/4] - 2 x 20
= 27 + [28.4] + 23 + [5.75]
+ [5] - 40
[dropp every number after the decimal
point]
= 27 + 28 + 23 + 5 + 5 - 40 = 48.
Once we have found F, we divide it by 7 and take the remainder
(if the remainder is negative, add 7). A remainder of 0 corresponds
to Sunday, 1 means Monday, etc. For our example, 48 / 7 =
6, remainder 6, so January 27, 2024 will be a Saturday. Then,
have a nice week-end!
Read here before copying and using any of our images
or texts. Thanks
Italy
| contact@archimedes-lab.org
