Published: Jan. 4, 2024 By

Who Received This Email?
We sent this email at 7 p.m. on Wednesday, Jan. 3, 2024, to Main Campus, degree-seeking undergraduate and graduate students (not law) who had registered or were eligible to register for Spring 2024 classes.

As you prepare for the Spring 2024 semester, please keep in mind the following key dates. Deadlines occur at 11:59 p.m. Mountain Time unless otherwise noted.

These dates apply to Main Campus classes that follow the full-semester start and end dates (Jan. 16–May 8, 2024). For other calendars, see our academic calendar webpage.*

Monday, Jan. 8

Tuesday, Jan. 9

Monday, Jan. 15

  • Martin Luther King Jr. holiday (no classes; university closed).

Tuesday, Jan. 16

Wednesday, Jan. 24

Wednesday, Jan. 31

Sunday, Feb. 4

Monday, Feb. 5

Tuesday, Feb. 13

Friday, March 22

Monday, March 25–Friday, March 29

  • Spring break (no classes; university closed March 29).

Thursday, May 2

Saturday, May 4–Wednesday, May 8

* If you’re enrolled in any class that doesn’t meet for the full 16 weeks, it’s a special session class. Special session classes follow different deadlines than full-semester classes (view the special session calendar). To check the session and view key dates for one of your classes, go to the Your Classes card in Buff Portal. Select a class to view session information and the “Drop/Swap/Edit This Class” button for related deadlines.

Office of the Registrar | University of Colorado Boulder
303-492-6970 |