ARISTEAN
CALENDAR

DETERMINATION OF THE DATE GIVEN THE DAY

 

The following are the steps in determining the date given the day of the week and month in the Aristean Calendar.

Month number in the quarter

1

2

3

Maximum number of days in month*

31

30

30

First Quarter

Jan

Feb

Mar

Second Quarter

Apr

May

Jun

Third Quarter

Jul

Aug

Sep

Fourth Quarter

Oct

Nov

Dec

Constant to be added to day number

7

4

2

* Exceptions are December 31 which is World Peace Day or Grand Sabbath, and June 31 which is Leap Year Day or Glorious Sabbath. Both these dates do not have the regular name day of the week.

1.

With the given month, determine the constant to be used in step 2. The constants for the months as shown in the above table are:

7 - for the first months of the quarter, i.e. Jan, Apr, Jul, and Oct

4 - for the second months of the quarter, i.e. Feb, May, Aug, and Nov

2 - for the third months of the quarter, i.e. Mar, Jun, Sep, and Dec

Note that the constant is the number of dates on the first row of the month in the calendar. This is also the date of the first Sunday of the month.

2.

Add the constant from step 1 to the day number of the day of the week. If the given day of the week is:

At his point, you may not proceed to steps 3 and 4 anymore. You may work out mentally what the date will be by using 7, 14, 21, or 28 to get the date of the nth day of the week of the month.

3.

Determine the date for the first day of the week of the month.
If the sum in step 2 is more than 7, subtract 7.
If the sum in step 2 is less than 7, use this value as the first day of the week of the month.

 Note: Be sure that the sum does not exceed the maximum number of days for the month as shown in the above table.

If the given day of the week is

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Then, add

1

2

3

4

5

6

7

 4.

To the sum derived in step 2 or the difference in step 3, add the following value to the nth week.

Add

0

7

14

21

28

For the

1st Week

2nd Week

3rd Week

4th Week

5th Week

 

 Sample illustrations

Step

1

2

3

4

Find date

Month

Constant

Day of the Week

Day Number

Sum of
C & E

Diff
(F-7)
or F

Nth Week

Value of Nth Week

Sum of
G & I

Date Derived

A

B

C

D

E

F

G

H

I

J

K

2nd Wed of Apr

Apr

7

Wed

3

10

3

2nd

7

10

Apr 10

3rd Tue of Nov

Nov

4

Tue

2

6

6

3rd

14

20

Nov 20

4th Sun of Mar

Mar

2

Sun

7

9

2

4th

21

23

Mar 23

Note: The determination of the day of the week presented in the previous topic is more practical and less complicated than this determination of the date. This is presented just in case you may need it or wish to know how to do it.

 

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