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Saturday, August 30th, 2025
12:00am – 8/31 12:00am
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End of summer term

Thursday, September 18th, 2025
8:00am – 9/20 5:00pm
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International Student Orientation: iBegin@Caltech

Sunday, September 21st, 2025
10:00am – 4:00pm
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New Student Check-In for Undergraduates

10:00am – 9/28 4:00pm
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New Student Orientation for Undergraduates

Monday, September 22nd, 2025
9:00am – 4:00pm
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New Student Check-in for Graduates

12:00pm – 9/26 5:00pm
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New Student Orientation for Graduates

Thursday, September 25th, 2025
1:00pm – 5:00pm
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Undergraduate Academic Standards and Honors Committee Meeting

Monday, September 29th, 2025
12:00am – 9/30 12:00am
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Beginning of Instruction of Fall Term

Friday, October 17th, 2025
8:00am – 5:00pm
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Last Day for Adding Courses and Removing Conditions and Incompletes

Wednesday, October 29th, 2025
8:00am – 11/4 11:59pm
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Midterm Examination Period

Monday, November 10th, 2025
9:00am – 9:01am
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Due Date for Midterm Grades

Wednesday, November 19th, 2025
8:00am – 5:00pm
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Last Day for Dropping Courses, Exercising Pass/Fail Option, and Changing Sections

Thursday, November 20th, 2025
8:00am – 12/5 11:59pm
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Registration for Winter Term

Friday, November 21st, 2025
8:00am – 5:00pm
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Last Day for Admission to Candidacy for the Degrees of Master of Science and Engineer

Friday, December 5th, 2025
12:00am – 12/6 12:00am
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Last Day of Classes for Fall Term

Saturday, December 6th, 2025
8:00am – 12/9 11:59pm
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Study Period

Wednesday, December 10th, 2025
8:00am – 12/12 11:59pm
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Final Examinations for Fall Term

Friday, December 12th, 2025
12:00am – 12/13 12:00am
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End of Fall Term

Saturday, December 13th, 2025
8:00am – 1/4 11:59pm
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Winter Recess

Wednesday, December 17th, 2025
9:00am – 9:01am
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Due Date for Instructors' Final Grade Reports

Monday, January 5th, 2026
12:00am – 1/6 12:00am
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Beginning of Instruction of Winter Term

Tuesday, January 6th, 2026
9:00am – 12:00pm
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Undergraduate Academic Standards and Honors Committee Meeting

Friday, January 23rd, 2026
8:00am – 5:00pm
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Last Day for Adding Courses and Removing Conditions and Incompletes

Wednesday, February 4th, 2026
8:00am – 2/10 11:59pm
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Midterm Examination Period

Tuesday, February 17th, 2026
9:00am – 9:01am
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Due Date for Midterm Grades

Wednesday, February 25th, 2026
8:00am – 5:00pm
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Last Day for Dropping Courses, Exercising Pass/Fail Option, and Changing Sections

Thursday, February 26th, 2026
8:00am – 3/11 11:59pm
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Registration for Spring Term

Wednesday, March 11th, 2026
12:00am – 3/12 12:00am
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Last Day of Classes for Winter Term

Thursday, March 12th, 2026
8:00am – 3/15 11:59pm
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Study Period

Wednesday, March 18th, 2026
12:00am – 3/19 12:00am
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End of Winter Term

Thursday, March 19th, 2026
8:00am – 3/29 11:59pm
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Spring Recess

Monday, March 23rd, 2026
9:00am – 9:01am
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Due Date for Instructors' Final Grade Reports

Monday, March 30th, 2026
12:00am – 3/31 12:00am
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Beginning of Instruction of Spring Term

Tuesday, March 31st, 2026
9:00am – 12:00pm
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Undergraduate Academic Standards and Honors Committee Meeting

Friday, April 17th, 2026
8:00am – 5:00pm
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Last Day for Adding Courses and Removing Conditions and Incompletes

Wednesday, April 29th, 2026
8:00am – 5/5 11:59pm
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Midterm Examination Period

Monday, May 11th, 2026
9:00am – 9:01am
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Due Date for Midterm Grades

Friday, May 15th, 2026
8:00am – 5:00pm
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Last Day for Scheduling Examinations for the Degress of Doctor of Philosophy and Engineer

8:00am – 5:00pm
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Last Day for Seniors to Remove Conditions and Incompletes

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