SNU's academic year begins at March and ends at the next February. An academic year has two regular semesters of spring and fall which are 16 weeks long, and two of six-weeks sessions during summer and winter breaks.
| 2019 JANUARY |
1 | New Year Day (public holiday) |
| 7 - 11 | Application period for department transfer | |
| 10 | Last day to withdraw from winter session courses | |
| 25 | Winter session courses end | |
| 24 - 30 | Registration for spring semester courses Application period for double major and combined major |
|
| 30 - Feb. 1 | Tuition payment period for newly admitted undergraduate students | |
| FEBRUARY | 1 | Last day for faculty to submit winter session grades |
| 4 - 6 | Seol (public holidays) | |
| 7 - 13 | Tuition payment period for newly admitted graduate students | |
| 11 | Last day to submit application for re-admission and re-enrollment | |
| 13 - 19 | Application period for minor, combined minor and student designed major | |
| 21 - 27 | Tuition payment period for spring semester | |
| 26 | Graduation ceremony | |
| 27 | Last day to submit application for re-registration | |
| 28 | Winter break ends, fall semester ends | |
| MARCH | 1 | Independence Movement Day (national holiday), 2019 Academic Year begins |
| 4 | Matriculation ceremony for undergraduates, spring semester classes begin | |
| 4 - 8 | Course add and drop period | |
| 11 - 15 | Course demand survey for summer session | |
| 11 - 22 | Application period for faculty to open fall semester courses | |
| 25 - 29 | Application period for faculty to open summer session courses | |
| 27 | First quarter of spring semester ends | |
| APRIL | 22 | Second quarter of spring semester ends, Last day to withdraw from courses |
| 25 - 26 | Reading period | |
| MAY | 6 | Substitute holiday for Children’s Day (May 5) |
| 7 | Substitute holiday for Children's Day | |
| 9 - 15 | Registration for summer session courses | |
| 12 | Buddha’s Birthday (public holiday) | |
| 17 | Third quarter of spring semester ends | |
| 27 - June 14 | Application period for fall semester scholarships | |
| JUNE | 6 | Memorial Day (public holiday) |
| 14 | Last day to submit application for fall semester scholarships | |
| 14 | Spring semester classes end | |
| 15 - 21 | Make-up classes | |
| 17 – July 19 | Application period for re-admission and re-enrollment | |
| 17 - Aug. 30 | Application period for re-registration | |
| 24 | Summer break begins, Summer session classes begin | |
| 28 | Last day for faculty to submit spring semester grades | |
| JULY | 12 | Last day to withdraw from summer session courses |
| 19 | Last day to submit application for re-admission and re-enrollment | |
| AUGUST | 2 | Summer session classes end |
| 1 - 7 | Registration for fall semester courses, Application period for double major and combined major | |
| 1 - 7 | Tuition payment period for newly admitted graduate students | |
| 9 | Last day for faculty to submit summer session grades | |
| 15 | Independence Day (national holiday) | |
| 16 - 22 | Application period for minor, interdisciplinary minor, and student-designed major | |
| 26 - 30 | Tuition payment period for fall semester | |
| 29 | Summer graduation ceremony | |
| 30 | Last day to submit application for re-registration | |
| 31 | Summer break ends, spring semester ends | |
| SEPTEMBER | 1 | Fall semester begins |
| 2 | Fall semester classes begin | |
| 2 – 6 | Course add and drop period | |
| 5 – 11 | Course demand survey for winter session | |
| 12 – 15 | Chuseok (public holidays) | |
| 9 - 20 | Application period for faculty to open next spring courses | |
| 27 | First quarter of fall semester ends | |
| 23 - 27 | Application period for faculty to open winter session courses | |
| OCTOBER | 3 | Foundation Day (national holiday) |
| 9 | Hangeul Day (national holiday) | |
| 15 | SNU Anniversary (no class) | |
| 25 | Second quarter of fall semester ends, Last day to withdraw from fall semester courses | |
| 24 – 25 | Reading period | |
| NOVEMBER | 7 – 13 | Registration for winter session courses |
| 20 | Third quarter of fall semester ends | |
| 25 - Dec. 13 | Application period for spring semester scholarships | |
| DECEMBER | 13 | Fall semester courses end |
| 14 – 20 | Make-up classes | |
| 16 - Feb. 27, 2020 | Application period for re-admission and re-enrollment | |
| 17 - Feb. 27, 2020 | Application period for re-registration | |
| 23 | Winter break begins, Winter session classes begin | |
| 25 | Christmas (public holiday) | |
| 27 | Last day for faculty to submit fall semester grades | |
| 2020 JANUARY |
1 | New Year Day (public holiday) |
| 6 - 10 | Application period for department transfer | |
| 13 | Last day to withdraw from winter session courses | |
| 24 - 27 | Seol (public holidays) | |
| 28 | Winter session courses end | |
| 28 – Feb. 3 | Application period for double major and combined major | |
| 29 - 31 | Tuition payment period for newly admitted undergraduate students | |
| 30 - Feb. 5 | Registration for spring semester courses | |
| FEBRUARY | 4 | Last day for faculty to submit winter session grades |
| 3 - 7 | Tuition payment period for newly admitted graduate students | |
| 11 | Last day to submit application for re-admission and re-enrollment | |
| 10 - 14 | Application period for minor, interdisciplinary minor and student designed major | |
| 19 – 25 | Tuition payment period for spring semester | |
| 26 | Winter graduation ceremony | |
| 27 | Last day to submit application for re-registration | |
| 29 | Winter break ends, fall semester ends |
* The schedule is subject to change as appropriate