[School year 1930] Date of birth and age of 1st year Ph.D. student

Calculate date of birth and age from grade

Date of birth and age of 1st year Ph.D. student as of School year 1930(Showa 5).
You can also check the age before and after the birthday, and the Sexagenary cycle.
In addition, you can easily check Grade list such as date of birth, grade, age, etc. for each year in the table.

School year starts on April 1st and ends on March 31st of the following year.
"School year 1930" is from April 1, 1930 to March 31, 1931.

School year 1930(Showa 5) - 1st year Ph.D. student

School year 1930
(Showa 5)
April 2, 1930 – April 1, 1931
Grade 1st year Ph.D. student
Date of birth April 2, 1905 – April 1, 1906
Age 24 years old – 25 years old
If your birthday has not yet come after April 2nd : 24 years old
If your birthday is after April 2nd : 25 years old
Sexagenary cycle
Born in 1905 : 巳(Mi 巳(Mi))
Born in 1906 : 午(Uma 午(Uma))

Grade list

DateGrade Age
April 2, 1905 – April 1, 1906 Birth
April 2, 1906 – April 1, 1907 0 – 1
April 2, 1907 – April 1, 1908 1 – 2
April 2, 1908 – April 1, 1909 2 – 3
April 2, 1909 – April 1, 1910 1st year of kindergarten 3 – 4
April 2, 1910 – April 1, 1911 2nd year of kindergarten 4 – 5
April 2, 1911 – April 1, 1912 3rd year of kindergarten 5 – 6
April 2, 1912 – April 1, 1913 1st grade in elementary school 6 – 7
April 2, 1913 – April 1, 1914 2nd grade in elementary school 7 – 8
April 2, 1914 – April 1, 1915 3rd grade in elementary school 8 – 9
April 2, 1915 – April 1, 1916 4th grade in elementary school 9 – 10
April 2, 1916 – April 1, 1917 5th grade in elementary school 10 – 11
April 2, 1917 – April 1, 1918 6th grade in elementary school 11 – 12
April 2, 1918 – April 1, 1919 1st grade in junior high school 12 – 13
April 2, 1919 – April 1, 1920 2nd grade in junior high school 13 – 14
April 2, 1920 – April 1, 1921 3rd grade in junior high school 14 – 15
April 2, 1921 – April 1, 1922 1st grade in high school 15 – 16
April 2, 1922 – April 1, 1923 2nd grade in high school 16 – 17
April 2, 1923 – April 1, 1924 3rd grade in high school 17 – 18
April 2, 1924 – April 1, 1925 1st year university student 18 – 19
April 2, 1925 – April 1, 1926 2nd year university student 19 – 20
April 2, 1926 – April 1, 1927 3rd year university student 20 – 21
April 2, 1927 – April 1, 1928 4th year university student 21 – 22
April 2, 1928 – April 1, 1929 1st year master's student 22 – 23
April 2, 1929 – April 1, 1930 2nd year master's student 23 – 24
April 2, 1930 – April 1, 1931 1st year Ph.D. student 24 – 25
April 2, 1931 – April 1, 1932 2nd year Ph.D. student 25 – 26
April 2, 1932 – April 1, 1933 3rd year Ph.D. student 26 – 27

*Primary school(6 years) / Junior high school(3 years) / High school(3 years) / Four-year university(4 years) / Master's course(2 years) / Doctoral course(3 years)

*Age does not take into account repeat grades or ronin.

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