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More detailed calendars are available to the Community via the Student, Parent, and Employee portals.

2023-2024 Major Dates Calendar [updated 7/24/23]

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December 2023
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Sun, Nov 26
Mon, Nov 27

Professional Day - No Classes
HAS US Swim Practice
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Sea Devils
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NCAP
-
Tue, Nov 28

Classes Resume

Trimester 2 Begins
Tuesday Blue
Landon
-
HAS US Swim Practice
-
Varsity Ice Hockey vs. Stone Ridge @ Wells (Away)
Wells Ice Arena
NCAP
-

US Winter One-Acts Directors Meeting
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Black Box Theater
Sea Devils
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Wed, Nov 29

POCC/SDLC
Wednesday Blue
Holton Diving
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Wednesday Late Start - 9:10 a.m.

LGBTQIA+ Alumnae & Spectrum Virtual Lunch
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Fathers Club Lounge
HAS MS/US Practice
-
Sea Devils
-
NCAP
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Thu, Nov 30

POCC/SDLC
Thursday Blue
Landon
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Coffee and Conversation with Penny Evins
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Simms Reception Room

MWISLA Librarian Coffee
-

LS Library

National Gallery of Art Trip - Maclean
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National Gallery of Art
JV Basketball vs. Brookewood School (Home)

Upper School JV Basketball
Varsity Swimming & Diving vs. Visitation (Home)

Upper School Swimming

Middle School and Upper School Instrumental Concert
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MS/US Instrumental Concert
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James Whittier Lewis Theater
Swim Meet: Holy Child v. Georgetown Visitation
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Fri, Dec 1

POCC/SDLC
Friday Blue
HAS MS/US Practice
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MS Swimming vs. Flint Hill School - MS, Brookewood School, Landon School (Home)
Holton Diving
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Varsity Basketball vs. McLean School CANCELLED (Home)

US Improv Performance
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Landon PAC
Sea Devils
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Sat, Dec 2

POCC/SDLC

MS Model UN Conference
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D.C.
Sea Devils
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Swing Choir/Chamber Singers Tech Rehearsal
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James Whittier Lewis Theater
NCAP
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Potomac
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Holiday Ball
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Dining Room
Sun, Dec 3
Holton Diving
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Georgetown Visitation
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Sea Devils
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Mon, Dec 4
Monday White
Landon
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US Class Meetings
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Simms Reception Room

Author Polly Holyoke Visit
-
HAS MS/US Practice
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MS Basketball A vs. National Cathedral School (Away)
MS Basketball B vs. National Cathedral School (Away)
Varsity Ice Hockey vs. Bryn Mawr School (Away)
Cabin John Rink
Varsity Basketball vs. Holy Cross (Away)

US Winter One-Acts Auditions
-

Black Box Theater
Sea Devils
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NCAP
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Tue, Dec 5
Tuesday White

Mirabal - NMAAHC
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National Museum of African American History and Culture

Gr.4 Trip to National Portrait Gallery
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National Portrait Gallery

MS Admissions Informational Coffee
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Simms Reception Room
HAS US Swim Practice
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AISGW
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Simms Reception Room
Varsity Swimming & Diving vs. National Cathedral School (Home)

Upper School Swimming

US Winter One-Acts Auditions
-

Black Box Theater
Swim Meet: Georgetown Visitation v. Episicopal v. Bullis
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Wed, Dec 6
Subscribe to Alerts Wednesday White
Subscribe to Alerts Holton Diving
-
Subscribe to Alerts
Wednesday Late Start - 9:10 a.m.
Subscribe to Alerts HAS MS/US Practice
-
Subscribe to Alerts
ISMAW Math Meet for Upper School
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Georgetown Visitation Prep School
Subscribe to Alerts Varsity Ice Hockey vs. Bishop O'Connell High School @ Medstar (Away)
Subscribe to Alerts JV Basketball vs. Charles E. Smith Jewish Day School (Home)
Subscribe to Alerts Varsity Basketball vs. Charles E. Smith Jewish Day School (Home)
Subscribe to Alerts
Gingerbread Workshop
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Dining Room
Subscribe to Alerts Sea Devils
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Subscribe to Alerts NCAP
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Thu, Dec 7
Subscribe to Alerts
Hanukkah
Subscribe to Alerts Thursday White
Subscribe to Alerts Landon
-
Subscribe to Alerts
Mirabal - Ford's Theater
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Ford's Theater
Subscribe to Alerts
LS Admissions Informational Coffee
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Simms Reception Room
Subscribe to Alerts HAS US Swim Practice
-
Subscribe to Alerts JV Ice Hockey vs. Spaulding @ Piney Orchard (Away)
Subscribe to Alerts NCAP
-
Subscribe to Alerts
US Winter One-Acts First Rehearsal
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Black Box Theater
Subscribe to Alerts Sea Devils
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Fri, Dec 8
Subscribe to Alerts
Hanukkah
Subscribe to Alerts Friday White
Subscribe to Alerts
Gr.8 Trip to Mt. Vernon
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Mt. Vernon
Subscribe to Alerts HAS MS/US Practice
-
Subscribe to Alerts Holton Diving
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Subscribe to Alerts Varsity Indoor Track & Field vs. Time Trial (Home)
Subscribe to Alerts Sea Devils
-
Subscribe to Alerts
Middle School and Upper School Choral Concert
-
Subscribe to Alerts
MS/US Winter Choral Concert
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James Whittier Lewis Theater
Sat, Dec 9
Subscribe to Alerts Sea Devils
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Subscribe to Alerts NCAP
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Subscribe to Alerts Potomac
-
Subscribe to Alerts
It's Academic Play-Off Game
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Interface Media Group
Sun, Dec 10
Subscribe to Alerts Holton Diving
-
Subscribe to Alerts Sea Devils
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Mon, Dec 11
Subscribe to Alerts
Hanukkah
Subscribe to Alerts Monday Blue
Subscribe to Alerts Landon
-
Subscribe to Alerts
US Class Meetings
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Simms Reception Room
Subscribe to Alerts HAS MS/US Practice
-
Subscribe to Alerts JV Basketball vs. Flint Hill School - US (Home)
Subscribe to Alerts
Upper School JV Basketball
Subscribe to Alerts Varsity Basketball vs. Flint Hill School - US (Home)
Subscribe to Alerts
Upper School Varsity Basketball
Subscribe to Alerts Sea Devils
-
Subscribe to Alerts
Middle School/Upper School Winter Handbells & Chamber Music Concert
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Subscribe to Alerts
MS/US Winter Handbells & Chamber Music Concert
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Simms Reception Room
Subscribe to Alerts NCAP
-
Tue, Dec 12
Subscribe to Alerts
Hanukkah
Subscribe to Alerts Tuesday Blue
Subscribe to Alerts Landon
-
Subscribe to Alerts
Mirabal - Monuments Tour
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DC Mall
Subscribe to Alerts
Gr.6 Trip to A Wider Circle (Trip 1)
-
Subscribe to Alerts
Jewish Affinity Group Student Hanukkah Party
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A103
Subscribe to Alerts
Gr.6 Trip to A Wider Circle (Trip 2)
-
Subscribe to Alerts HAS US Swim Practice
-
Subscribe to Alerts JV Basketball vs. Madeira (Away)
Subscribe to Alerts Varsity Basketball vs. Madeira (Away)
Subscribe to Alerts NCAP
-
Subscribe to Alerts Sea Devils
-
Wed, Dec 13
Subscribe to Alerts
Hanukkah
Subscribe to Alerts Wednesday Blue
Subscribe to Alerts Holton Diving
-
Subscribe to Alerts
Wednesday Late Start - 9:10 a.m.
Subscribe to Alerts
Art and Spanish Field Trip - Iglesias
-

Mexican Cultural Institute
Subscribe to Alerts MS Swimming vs. Stone Ridge School (Away)
Subscribe to Alerts HAS MS/US Practice
-
Subscribe to Alerts MS Basketball A vs. Washington Episcopal School (Away)
Subscribe to Alerts MS Basketball B vs. Washington Episcopal School (Home)
Subscribe to Alerts Sea Devils
-
Subscribe to Alerts NCAP
-
Thu, Dec 14
Subscribe to Alerts
Hanukkah
Subscribe to Alerts Thursday Blue
Subscribe to Alerts Landon
-
Subscribe to Alerts
Mirabal - American History Museum & Chinatown Market
-

American History Museum & Chinatown Market
Subscribe to Alerts
LS Common Threads Coffee
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Simms Reception Room
Subscribe to Alerts Swim Meet: Landon v. Maret v. Potomac
-
Subscribe to Alerts HAS US Swim Practice
-
Subscribe to Alerts Varsity Swimming & Diving vs. Stone Ridge School (Away)
Subscribe to Alerts Varsity Ice Hockey vs. St. Timothy's School (Away)
Cabin John Rink
Subscribe to Alerts
Upper School Ice Hockey (Cabin John Ice Rink)
Subscribe to Alerts
MTW and ACTivate Winter Drama INFOrmance
-

Black Box Theater
Subscribe to Alerts
Orchesis Open House
Subscribe to Alerts
US ORCHESIS Open House
-

Large Dance Studio
Fri, Dec 15
Subscribe to Alerts
Hanukkah
Subscribe to Alerts Friday Blue
Subscribe to Alerts HAS MS/US Practice
-
Subscribe to Alerts Holton Diving
-
Subscribe to Alerts JV Basketball vs. National Cathedral School (Away)
Subscribe to Alerts Varsity Basketball vs. National Cathedral School (Away)
Subscribe to Alerts NCAP
-
Subscribe to Alerts Sea Devils
-
Sat, Dec 16
Subscribe to Alerts Sea Devils
-
Subscribe to Alerts Varsity Indoor Track & Field vs. Dickinson College Invite - Carlisle PA (Away)
Subscribe to Alerts NCAP
-
Subscribe to Alerts Potomac
-
Sun, Dec 17
Subscribe to Alerts Holton Diving
-
Subscribe to Alerts Georgetown Visitation
-
Subscribe to Alerts Sea Devils
-
Mon, Dec 18
Subscribe to Alerts Monday White
Subscribe to Alerts Landon
-
Subscribe to Alerts
US Class Meetings
-

Simms Reception Room
Subscribe to Alerts HAS MS/US Practice
-
Subscribe to Alerts MS Basketball A vs. Potomac (Home)
Subscribe to Alerts MS Basketball B vs. Potomac (Away)
Subscribe to Alerts Varsity Ice Hockey vs. Holy Cross @ Wheaton (Away)
Subscribe to Alerts JV Ice Hockey vs. Visi @ Cabin John (Away)
Subscribe to Alerts Sea Devils
-
Subscribe to Alerts NCAP
-
Tue, Dec 19
Subscribe to Alerts Tuesday White
Subscribe to Alerts Landon
-
Subscribe to Alerts
LS Sleigh Rides
-

Tennis Courts
Subscribe to Alerts
All-School Dismissal for Winter Break @ 3:30 p.m.
Subscribe to Alerts HAS US Swim Practice
-
Subscribe to Alerts NCAP
-
Subscribe to Alerts Sea Devils
-
Wed, Dec 20
Subscribe to Alerts
Winter Break - School Closed
Subscribe to Alerts HAS US Practice
-
Subscribe to Alerts Sea Devils
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Subscribe to Alerts NCAP
-
Thu, Dec 21
Subscribe to Alerts
Winter Break - School Closed
Subscribe to Alerts
Winter Solstice
Subscribe to Alerts HAS US Practice
-
Subscribe to Alerts NCAP
-
Subscribe to Alerts Sea Devils
-
Fri, Dec 22
Subscribe to Alerts
Winter Break - School Closed
Subscribe to Alerts HAS US Practice
-
Sat, Dec 23
Sun, Dec 24
Mon, Dec 25
Subscribe to Alerts
Christmas Day
Subscribe to Alerts
Winter Break - School Closed
Tue, Dec 26
Subscribe to Alerts
Kwanzaa
Subscribe to Alerts
Winter Break - School Closed
Subscribe to Alerts HAS US Practice
-
Wed, Dec 27
Subscribe to Alerts
Kwanzaa
Subscribe to Alerts
Winter Break - School Closed
Subscribe to Alerts HAS US Practice
-
Thu, Dec 28
Subscribe to Alerts
Kwanzaa
Subscribe to Alerts
Winter Break - School Closed
Subscribe to Alerts HAS US Practice
-
Fri, Dec 29
Subscribe to Alerts
Kwanzaa
Subscribe to Alerts
Winter Break - School Closed
Subscribe to Alerts HAS US Practice
-
Sat, Dec 30
Sun, Dec 31
Mon, Jan 1
Subscribe to Alerts
Kwanzaa
Subscribe to Alerts
Winter Break - School Closed
Tue, Jan 2
Subscribe to Alerts
Winter Break - School Closed
Wed, Jan 3
Subscribe to Alerts
Classes Resume
Subscribe to Alerts Wednesday White
Subscribe to Alerts Holton Diving
-
Subscribe to Alerts
Wednesday Late Start - 9:10 a.m.
Subscribe to Alerts HAS MS/US Practice
-
Subscribe to Alerts
US Winter One-Acts Rehearsals
-

Black Box Theater
Subscribe to Alerts Sea Devils
-
Subscribe to Alerts NCAP
-
Thu, Jan 4
Subscribe to Alerts Thursday White
Subscribe to Alerts Landon
-
Subscribe to Alerts
Young Alumnae Panels
-

James Whittier Lewis Theater
Subscribe to Alerts HAS US Swim Practice
-
Subscribe to Alerts NCAP
-
Subscribe to Alerts
US Winter One-Acts Rehearsals
-

Black Box Theater
Subscribe to Alerts Sea Devils
-
Fri, Jan 5
Subscribe to Alerts Friday White
Subscribe to Alerts HAS MS/US Practice
-
Subscribe to Alerts MS Basketball B vs. Brookewood School (Home)
Subscribe to Alerts JV Ice Hockey vs. Visi @ St. James (Away)
Subscribe to Alerts Holton Diving
-
Subscribe to Alerts Varsity Indoor Track & Field vs. Time Trial (Home)
Subscribe to Alerts
Upper School Indoor Track (Timed Trials)
Subscribe to Alerts Sea Devils
-
Subscribe to Alerts
US Improv Performance
-

Black Box Theater
Subscribe to Alerts NCAP
-
Sat, Jan 6
Subscribe to Alerts Sea Devils
-
Subscribe to Alerts NCAP
-
Subscribe to Alerts Varsity Basketball vs. Mercersburg Academy (Away)