The University's academic year is divided into four quarters (Fall, Winter, Spring, and Summer) each with around nine weeks of instruction. The dates for each academic year are usually confirmed before the summer holiday.

Summer Quarter 2019
April 29 – July 4
April 29Classes begin
May 1International Workers' Day
May 18Sports Meeting
May 21122nd anniversary of ZJU
June 7    Duanwu (Dragon-boat) Festival
June 24-30 Summer graduations
June 30Graduation Ceremony
June 25-July 4Examinations
Autumn Quarter 2019
September 6 – November 9
September 2-3International students register
September 6Domestic students register
September 9Classes begin
September 13Mid-Autumn Festival 
September 23-30Autumn graduations (postgraduates)
October 1-7National Day Holiday
October 25-27Sports Meeting
November 5-9Examinations
Winter Quarter 2019
November 11, 2019 – January 17, 2020
November 11Classes begin
December 23-30Winter graduations (postgraduates)
December 31ZJU Students' Day
January 1New Year's Day
January 8-17Examinations
January 18-February 20Winter vacation
Spring Quarter 2019
February 21 – April 4
February 21Students register
February 24Classes begin
March 23-30Spring graduations (postgraduates)
March 30Graduation Ceremony
April 4Qingming (Tomb-sweeping) Festival