Step 1: Find the year and note the letter next to it.

YEARS

1910-F
1911-G
1912-H
1913-C
1914-D
1915-E
1916-M
1917-A
1918-B
1919-C
1920-K
1921-F
1922-G
1923-A
1924-I
1925-D
1926-E
1927-F
1928-N
1929-B
1930-C
1931-D
1932-L
1933-G
1934-A
1935-B 
1936-J
1937-E
1938-F
1939-G
1940-H
1941-C
1942-D
1943-E
1944-M
1945-A
1946-B
1947-C
1948-K
1949-F
1950-G
1951-A
1952-I
1953-D
1954-E
1955-F
1956-N
1957-B
1958-C
1959-D
1960-L
1961-G
1962-A
1963-B
1964-J
1965-E
1966-F
1967-G
1968-H
1969-C
1970-D
1971-E
1972-M
1973-A
1974-B
1975-C
1976-K
1977-F
1978-G
1979-A
1980-I
1981-D
1982-E
1983-F
1984-N 
1985-B
1986-C
1987-D
1988-L
1989-G
1990-A
1991-B
1992-J
1993-E
1994-F
1995-G
1996-H
1997-C
1998-D
1999-E
2000-M
2001-A
2002-B
2003-C
2004-K
2005-F
2006-G
2007-A
2008-I
2009-D
2010-E
2011-F
2012-N
2013-B
2014-C
2015-D
2016-L
2017-G
2018-A
2019-B
2020-J

 

Step 2: Under your month of birth, find that letter, and note the number that intersects your month and letter.

MONTHS

J F M A M J J A S O N D
A 1 4 4 7 2 5 7 3 6 1 4 6
B 2 5 5 1 3 6 1 4 7 2 5 7
C 3 6 6 2 4 7 2 5 1 3 6 1
D 4 7 7 3 5 1 3 6 2 4 7 2
E 5 1 1 4 6 2 4 7 3 5 1 3
F 6 2 2 5 7 3 5 1 4 6 2 4
G 7 3 3 6 1 4 6 2 5 7 3 5
H 1 4 5 1 3 6 1 4 7 2 5 7
I 2 5 6 2 4 7 2 5 1 3 6 1
J 3 6 7 3 5 1 3 6 2 4 7 2
K 4 7 1 4 6 2 4 7 3 5 1 3
L 5 1 2 5 7 3 5 1 4 6 2 4
M 6 2 3 6 1 4 6 2 5 7 3 5
N 7 3 4 7 2 5 7 3 6 1 4 6

Step 3: Use the calendar below and under the column with the number you got in step two above, go down to your date of birth. You will find your day of birth to the left.

Seven Calendars

1 2 3 4 5 6 7
Monday 1
Tuesday 2 1
Wednesday 3 2 1
Thursday 4 3 2 1
Friday 5 4 3 2 1
Saturday 6 5 4 3 2 1
Sunday 7 6 5 4 3 2 1
Monday 8 7 6 5 4 3 2
Tuesday 9 8 7 6 5 4 3
Wednesday 10 9 8 7 6 5 4
Thursday 11 10 9 8 7 6 5
Friday 12 11 10 9 8 7 6
Saturday 13 12 11 10 9 8 7
Sunday 14 13 12 11 10 9 8
Monday 15 14 13 12 11 10 9
Tuesday 16 15 14 13 12 11 10
Wednesday 17 16 15 14 13 12 11
Thursday 18 17 16 15 14 13 12
Friday 19 18 17 16 15 14 13
Saturday 20 19 18 17 16 15 14
Sunday 21 20 29 18 17 16 15
Monday 22 21 20 19 18 17 16
Tuesday 23 22 21 20 29 18 17
Wednesday 24 23 22 21 20 19 18
Thursday 25 24 23 22 21 20 19
Friday 26 25 24 23 22 21 20
Saturday 27 26 25 24 23 22 21
Sunday 28 27 26 25 24 23 22
Monday 29 28 27 26 25 24 23
Tuesday 30 29 28 27 26 25 24
Wednesday 31 30 29 28 27 26 25
Thursday 31 30 29 28 27 26
Friday 31 30 29 28 27
Saturday 31 30 29 28
Sunday 31 30 29
Monday 31 30
Tuesday 31