[School year 1998] 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 1998(Heisei 10).
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 1998" is from April 1, 1998 to March 31, 1999.

School year 1998(Heisei 10) - 1st year Ph.D. student

School year 1998
(Heisei 10)
April 2, 1998 – April 1, 1999
Grade 1st year Ph.D. student
Date of birth April 2, 1973 – April 1, 1974
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 1973 : 丑(Ushi 丑(Ushi))
Born in 1974 : 寅(Tora 寅(Tora))

Grade list

DateGrade Age
April 2, 1973 – April 1, 1974 Birth
April 2, 1974 – April 1, 1975 0 – 1
April 2, 1975 – April 1, 1976 1 – 2
April 2, 1976 – April 1, 1977 2 – 3
April 2, 1977 – April 1, 1978 1st year of kindergarten 3 – 4
April 2, 1978 – April 1, 1979 2nd year of kindergarten 4 – 5
April 2, 1979 – April 1, 1980 3rd year of kindergarten 5 – 6
April 2, 1980 – April 1, 1981 1st grade in elementary school 6 – 7
April 2, 1981 – April 1, 1982 2nd grade in elementary school 7 – 8
April 2, 1982 – April 1, 1983 3rd grade in elementary school 8 – 9
April 2, 1983 – April 1, 1984 4th grade in elementary school 9 – 10
April 2, 1984 – April 1, 1985 5th grade in elementary school 10 – 11
April 2, 1985 – April 1, 1986 6th grade in elementary school 11 – 12
April 2, 1986 – April 1, 1987 1st grade in junior high school 12 – 13
April 2, 1987 – April 1, 1988 2nd grade in junior high school 13 – 14
April 2, 1988 – April 1, 1989 3rd grade in junior high school 14 – 15
April 2, 1989 – April 1, 1990 1st grade in high school 15 – 16
April 2, 1990 – April 1, 1991 2nd grade in high school 16 – 17
April 2, 1991 – April 1, 1992 3rd grade in high school 17 – 18
April 2, 1992 – April 1, 1993 1st year university student 18 – 19
April 2, 1993 – April 1, 1994 2nd year university student 19 – 20
April 2, 1994 – April 1, 1995 3rd year university student 20 – 21
April 2, 1995 – April 1, 1996 4th year university student 21 – 22
April 2, 1996 – April 1, 1997 1st year master's student 22 – 23
April 2, 1997 – April 1, 1998 2nd year master's student 23 – 24
April 2, 1998 – April 1, 1999 1st year Ph.D. student 24 – 25
April 2, 1999 – April 1, 2000 2nd year Ph.D. student 25 – 26
April 2, 2000 – April 1, 2001 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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