Martin Luther King Jr. Birthday Observed
Martin Luther King Jr. Birthday Observed
12:00 AM - 11:59 PM
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Summer Registration Begins
First Summer E-Bill Notification
Last Day of Summer Session A
Second Summer E-Bill Notification
First Fall E-Bill Notification
Fall Classes Begin
Fall Last day to add/drop with full refund
Fall Last day to add/drop with full refund
12:00 AM - 9:30 PM
Event time is displayed in your time zone.
Fall Bill Due
Second Fall E-Bill Notification
Second Fall E-Bill Due
Third Fall E-Bill Notification
Third Fall E-Bill Due
Fourth Fall E-Bill Notification
Fourth Fall E-Bill Due
First Spring E-Bill Notification
First Spring E-Bill Due
Spring End of Change of Program Period
Spring End of Change of Program Period
12:00 AM - 10:00 PM
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Second Spring E-Bill Notification
Second Spring E-Bill Due
Third Spring E-Bill Notification
Spring Recess
Third Spring E-Bill Due
Fourth Spring E-Bill Notification
Fourth Spring E-Bill Due
Fifth Spring E-Bill Notification
Fifth Spring E-Bill Due
Sixth Spring E-Bill Notification
Sixth Spring E-Bill Due
Summer E-Bill Due
First Summer E-Bill Due
Summer Session B E-Bill Notification
Second Summer E-Bill Due
Summer Session B E-Bill Due
Memorial Day Holiday, University Closed- no classes
Memorial Day Holiday, University Closed- no classes
12:01 AM - 11:59 PM
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First Day of Summer Session A
First Day of Summer Session G
First Day of Summer Session X (Summer Full Term)
First Day of Summer Session X (Summer Full Term)
12:00 AM - 11:59 PM
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Last Day to Drop Summer Session A with a Full Refund
Last Day to Drop Summer Session A with a Full Refund
12:00 AM - 9:30 PM
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Last Day to Drop Summer Session X (Summer Full Term) with a Full Refund
Last Day to Drop Summer Session X (Summer Full Term) with a Full Refund
12:00 AM - 9:30 PM
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First Day of Summer Session J
Independence Day, University Closed- no classes
Independence Day, University Closed- no classes
12:00 AM - 11:59 PM
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First Day of Summer Session B
Last Day to Drop Summer Session B with a Full Refund
Last Day to Drop Summer Session B with a Full Refund
12:00 AM - 9:30 PM
Event time is displayed in your time zone.
Juneteenth, University Closed- no classes
Juneteenth, University Closed- no classes
12:01 AM - 11:59 PM
Event time is displayed in your time zone.
Last day of all summer classes
Last day of Summer Sessions B and X
Memorial Day
Late Registration - Summer 2026 Full Term (X)
Late Registration - Summer 2026 Full Term (X)
12:00 AM - 11:59 PM
Event time is displayed in your time zone.
Add/Drop with Full Refund Deadlines - Summer 2026 Full Term
Add/Drop with Full Refund Deadlines - Summer 2026 Full Term
12:00 AM - 11:59 PM
Event time is displayed in your time zone.
Add/Drop with Full Refund Deadlines - Summer 2026 Session A
Add/Drop with Full Refund Deadlines - Summer 2026 Session A
12:00 AM - 11:59 PM
Event time is displayed in your time zone.
Late Registration - Summer 2026 Session A
Late Registration - Summer 2026 Session A
12:00 AM - 11:59 PM
Event time is displayed in your time zone.
Late Registration - Summer 2026 Session G
Late Registration - Summer 2026 Session G
12:00 AM - 11:59 PM
Event time is displayed in your time zone.
Final Spring 2026 Bill Due Date
Summer 2026 First Billing Statement Sent
Summer 2026 First Billing Statement Sent
12:00 AM - 11:59 PM
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Late Registration - Summer 2026 Session H
Late Registration - Summer 2026 Session H
12:00 AM - 11:59 PM
Event time is displayed in your time zone.
Juneteeth
Session G Summer Term
Late Registration - Summer 2026 Session J
Late Registration - Summer 2026 Session J
12:00 AM - 11:59 PM
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Summer 2026 Medical Insurance - Enroll or Submit a Waiver
Summer 2026 Medical Insurance - Enroll or Submit a Waiver
12:00 AM - 11:59 PM
Event time is displayed in your time zone.
Summer 2026 Session A Final Exams
Session H Summer Term
Independence Day
Session A Summer Term
Add/Drop with Full Refund Deadlines - Summer 2026 Session B
Add/Drop with Full Refund Deadlines - Summer 2026 Session B
12:00 AM - 11:59 PM
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Late Registration - Summer 2026 Session B
Late Registration - Summer 2026 Session B
12:00 AM - 11:59 PM
Event time is displayed in your time zone.
Late Registration - Summer 2026 Session R
Late Registration - Summer 2026 Session R
12:00 AM - 11:59 PM
Event time is displayed in your time zone.
Session J Summer Term
Change of Program Period - Summer 2026 Full Term
Change of Program Period - Summer 2026 Full Term
12:00 AM - 11:59 PM
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Session R Summer Term
Deadline to Sign Housing Occupancy Agreement
Summer 2026 Session A Reading Day
Summer 2026 Session B/X Reading Day
Final Summer 2026 Bill Due Date
Session X Summer Term
Summer 2026 Session B/X Final Exams
Session B Summer Term
Fall 2026 Bill Emailed to All Active Students
Columbia Student Health Insurance Open Enrollment
Columbia Student Health Insurance Open Enrollment
12:00 AM - 12:00 PM
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