#Loading holidays.txt - Holiday Definition File 08-MAR-2026. Holidays and DST dates Through Dec-2028
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- This file is named holidays.txt; it resides in the admin directory where Investor/RT is installed on Windows.
- On Macintosh OS X, holidays.txt file is located inside the InvestorRT.app bundle, inside the Contents/Resources folder.
- On Macintosh OS X, right-click on the InvestorRT application and choose Show Package Contents to edit this file.
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- If you want to update this file, see the IMPORTANT NOTICE below.
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- Each line in the file must have the same or a higher date number than the line before it. Date numbers are six digits, YYMMDD, e.g. 201225 for Christmas Day 2020
- All lines that beginning with a hyphen are treated as comments.
- Lines beginning with a # are also comments, but the lines are written to the message log when the file is loaded by Investor/RT at startup.
- Be sure to specify the date number in the format YYMMDD, last 2 digits of the year, 2 digit month, 2 digit day of month.
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- The line format is: YYMMDD,H,holiday name  (The H means "all session" holiday).
- The line format is: YYMMDD,session,holiday name  (session-specific holiday). session is a number from 0 to 49, the session number.
- The Line format is: YYMMDD,DB (the date daylight savings time begins in the U.S.)
- The Line format is: YYMMDD,DE (the date daylight savings time ends in the U.S.)

- To declare a session-specific holiday for 2 or more sessions,
- include lines for each session with the same date number.
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- IMPORTANT NOTICE
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- The holidays.txt is updated every time you install a new version of Investor/RT. Do not make revisions to holidays.txt
- If you do make revisions to the holidays.txt file, your revisions will be lost when you next update the software.
- To supply your own holiday edits, save this file under the name myholidays.txt in your local admin directory.
- At startup, the Investor/RT looks for myholidays.txt; if it is present, it is used instead of the holidays.txt file in the install directory.
- If myholidays.txt does not exist in the local admin directory, holidays.txt in the install directory is used. 
- Windows 10: place myholidays.txt into C:\Users\your-user-name\InvestorRT\admin\  This admin directory is your local admin folder, the "working directory" admin folder.
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- To facilitate user editing of holiday dates, Investor/RT itself has a special function. Using the File Menu, choose File > Functions; select Override Holidays File; click Go.
- This function creates myholidays.txt file in the InvestorRT/admin directory and opens it for editing. Changes you make to myholidays.txt override the installation default holidays.txt file
- If your myholidays file becomes out of date due to the passage of time, you can refer to the holidays.txt file in the installation folder admin directory and copy paste future year holiday dates into your myholidays file.
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- Year 2010 Trading Holidays & DST Dates
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-YYMMDD
100101,H,New Years Day
--100118,H,Martin Luther King, Jr. Day (U.S.)
--100215,H,Presidents' Day (U.S.)
100314,DB,Daylight Savings Time Begins (U.S.) 
--100402,H,Good Friday
--100531,H,Memorial Day (U.S.)
--100705,H,Independence Day (U.S. Observed)
--100906,H,Labor Day (U.S.)
101107,DE,Daylight Savings Time Ends (U.S.) 
--101125,H,Thanksgiving Day (U.S)
101224,H,Christmas Day (Observed)
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- Year 2011 Trading Holidays & DST Dates
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-YYMMDD
110103,H,New Years Day (Observed)
--110117,H,Martin Luther King, Jr. Day (U.S.)
--110221,H,Presidents' Day (U.S.)
110313,DB,Daylight Savings Time Begins (U.S.) 
--110422,H,Good Friday
--110530,H,Memorial Day (U.S.)
--110704,H,Independence Day (U.S. Observed)
--110905,H,Labor Day (U.S.)
111106,DE,Daylight Savings Time Ends (U.S.) 
--111124,H,Thanksgiving Day (U.S)
111226,H,Christmas Day (Observed)
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- Year 2012 Trading Holidays & DST Dates
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-YYMMDD
120102,H,New Years Day (Observed)
--120116,H,Martin Luther King, Jr. Day (U.S.)
--120220,H,Presidents' Day (U.S)
120311,DB,Daylight Savings Time Begins (U.S.) 
--120406,H,Good Friday
--120528,H,Memorial Day (U.S.)
--120704,H,Independence Day (U.S.)
--120903,H,Labor Day (U.S.)
121104,DE,Daylight Savings Time Ends (U.S.) 
--121122,H,Thanksgiving Day (U.S.)
121225,H,Christmas Day
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- Year 2013 Trading Holidays & DST Dates
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-YYMMDD
130101,H,New Years Day 	
--130121,H,Martin Luther King, Jr. Day (U.S.)
--130218,H,Presidents' Day (U.S)
130310,DB,Daylight Savings Time Begins (U.S.) 
--130329,H,Good Friday
--130527,H,Memorial Day (U.S.)
--130704,H,Independence Day (U.S.)
--130902,H,Labor Day (U.S.)
131103,DE,Daylight Savings Time Ends (U.S.) 
--131128,H,Thanksgiving Day (U.S.)
131225,H,Christmas Day
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- Year 2014 Trading Holidays & DST Dates
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-YYMMDD
140101,H,New Years Day
--140120,H,Martin Luther King, Jr. Day (U.S.)
--140217,H,Presidents' Day (U.S)
140309,DB,Daylight Savings Time Begins (U.S.) 
--140418,H,Good Friday
--140526,H,Memorial Day (U.S.)
--140704,H,Independence Day (U.S.)
--140901,H,Labor Day (U.S.)
141102,DE,Daylight Savings Time Ends (U.S.) 
--141127,H,Thanksgiving Day (U.S.)
141225,H,Christmas Day
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- Year 2015 Trading Holidays & DST Dates
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-YYMMDD
150101,H,New Years Day
--150119,H,Martin Luther King, Jr. Day (U.S.)
--150216,H,Presidents' Day (U.S)
150308,DB,Daylight Savings Time Begins (U.S.) 
--150403,H,Good Friday
--150525,H,Memorial Day (U.S.)
--150703,H,Independence Day (U.S.)-Observed
--150907,H,Labor Day (U.S.)
151101,DE,Daylight Savings Time Ends (U.S.) 
--151126,H,Thanksgiving Day (U.S.)
151225,H,Christmas Day
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- Year 2016 Trading Holidays & DST Dates
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-YYMMDD
160101,H,New Years Day
--160118,H,Martin Luther King, Jr. Day (U.S.)
--160215,H,Presidents' Day (U.S)
160313,DB,Daylight Savings Time Begins (U.S.) 
--160325,H,Good Friday
--160530,H,Memorial Day (U.S.)
--160704,H,Independence Day (U.S.)
--160905,H,Labor Day (U.S.)
161106,DE,Daylight Savings Time Ends (U.S.) 
--161124,H,Thanksgiving Day (U.S.)
161226,H,Christmas Day - (Observed)
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- Year 2017 Trading Holidays & DST Dates
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-YYMMDD
170102,H,New Years Day - Observed
--170116,H,Martin Luther King, Jr. Day (U.S.)
--170220,H,Presidents' Day (U.S)
170312,DB,Daylight Savings Time Begins (U.S.) 
--170414,H,Good Friday
--170529,H,Memorial Day (U.S.)
--170704,H,Independence Day (U.S.)
--170904,H,Labor Day (U.S.)
171105,DE,Daylight Savings Time Ends (U.S.) 
--171123,H,Thanksgiving Day (U.S.)
171225,H,Christmas Day
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- Year 2018 Trading Holidays & DST Dates
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-YYMMDD
180101,H,New Years Day
--180115,H,Martin Luther King, Jr. Day (U.S.)
--180219,H,Presidents' Day (U.S)
180311,DB,Daylight Savings Time Begins (U.S.) 
--180330,H,Good Friday
--180528,H,Memorial Day (U.S.)
--180704,H,Independence Day (U.S.)
--180903,H,Labor Day (U.S.)
181104,DE,Daylight Savings Time Ends (U.S.) 
--181122,H,Thanksgiving Day (U.S.)
181225,H,Christmas Day
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- Year 2019 Trading Holidays & DST Dates
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-YYMMDD
190101,H,New Years Day
--190121,H,Martin Luther King, Jr. Day (U.S.)
--190218,H,Presidents' Day (U.S)
190310,DB,Daylight Savings Time Begins (U.S.) 
--190419,H,Good Friday
--190527,H,Memorial Day (U.S.)
--190704,H,Independence Day (U.S.)
--190902,H,Labor Day (U.S.)
191103,DE,Daylight Savings Time Ends (U.S.) 
--191128,H,Thanksgiving Day (U.S.)
191225,H,Christmas Day
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- Year 2020 Trading Holidays & DST Dates
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-YYMMDD
200101,H,New Years Day
--200120,H,Martin Luther King, Jr. Day (U.S.)
--201217,H,Presidents' Day (U.S)
200308,DB,Daylight Savings Time Begins (U.S.) 
--200410,H,Good Friday
--200525,H,Memorial Day (U.S.)
--200703,H,Independence Day (U.S. Observed)
--200907,H,Labor Day (U.S.)
201101,DE,Daylight Savings Time Ends (U.S.) 
--201126,H,Thanksgiving Day (U.S.) 
201225,H,Christmas Day
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- Year 2021 Trading Holidays & DST Dates
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-YYMMDD
210101,H,New Years Day
--210118,H,Martin Luther King, Jr. Day (U.S.)
--210215,H,Presidents' Day (U.S)
210314,DB,Daylight Savings Time Begins (U.S.) 
--210402,H,Good Friday
--210531,H,Memorial Day (U.S.)
--210705,H,Independence Day (U.S. Observed)
--210906,H,Labor Day (U.S.) 
211107,DE,Daylight Savings Time Ends (U.S.) 
--211125,H,Thanksgiving Day (U.S.)
211227,H,Christmas Day (Observed)
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- Year 2022 Trading Holidays & DST Dates
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-YYMMDD
220103,H,New Years Day (Observed)
--220117,H,Martin Luther King, Jr. Day (U.S.)
--220221,H,Washington's Birthday (Presidents' Day)
220313,DB,Daylight Savings Time Begins (U.S.) 
--220415,H,Good Friday
--220530,H,Memorial Day (U.S.)
--220704,H,Independence Day (U.S.)
--220905,H,Labor Day (U.S.)
221106,DE,Daylight Savings Time Ends (U.S.) 
--221124,H,Thanksgiving Day (U.S.)
221226,H,Christmas Day (Observed)
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- Year 2023 Trading Holidays & DST Dates
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-YYMMDD
230102,H,New Years Day (Observed)
--230116,H,Martin Luther King, Jr. (U.S.)
--230220,H,President's Day (U.S.)
230312,DB,Daylight Savings Time Begins (U.S.) 
--230407,H,Good Friday
--230529,H,Memorial Day (U.S.)
--230619,H,Juneteenth National Independence Day (U.S.)
--230704,H,Independence Day (U.S.)
--230904,H,Labor Day (U.S.)
231105,DE,Daylight Savings Time Ends (U.S.)
--231123,H,Thanksgiving Day (U.S.) 
231225,H,Christmas Day
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- Year 2024 Trading Holidays & DST Dates
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-YYMMDD
240101,H,New Years Day
--240115,H,Martin Luther King, Jr. (U.S.)
--240219,H,President's Day (U.S.)
240310,DB,Daylight Savings Time Begins (U.S.)
--240329,H,Good Friday 
240331,DBE,Daylight Savings Time Begins (Europe) 
--240527,H,Memorial Day (U.S.)
--240619,H,Juneteeth Holiday (U.S)
--240704,H,Independence Day (U.S.)
--240902,H,Labor Day (U.S.)
241027,DEE,Daylight Savings Time Ends (Europe) 
241103,DE,Daylight Savings Time Ends (U.S.)
--241128,H,Thanksgiving Day (U.S.) 
241225,H,Christmas Day
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- Year 2025 Trading Holidays & DST Dates
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-YYMMDD
250101,H,New Years Day
--250120,H,Martin Luther King, Jr. (U.S.)
--250217,H,President's Day (U.S.)
250309,DB,Daylight Savings Time Begins (U.S.)
250330,DBE,Daylight Savings Time Begins (Europe)
--250418,H,Good Friday
--250526,H,Memorial Day (U.S.)
--250619,H,Juneteenth National Independence Day (U.S.)
--250704,H,Independence Day (U.S.)
--250901,H,Labor Day (U.S.)
251026,DEE,Daylight Savings Time Ends (Europe) 
251102,DE,Daylight Savings Time Ends (U.S.)
--251127,H,Thanksgiving Day (U.S) 
251225,H,Christmas Day
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- Year 2026 Trading Holidays & DST Dates
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-YYMMDD
260101,H,New Years Day
--260119,H,Martin Luther King, Jr. (U.S.)
--260216,H,President's Day (U.S.)
260308,DB,Daylight Savings Time Begins (U.S.)
260329,DBE,Daylight Savings Time Begins (Europe)
--260403,H,Good Friday
--260525,H,Memorial Day (U.S.)
--260619,H,Juneteenth National Independence Day (U.S.)
--260703,H,Independence Day (U.S.)
--260907,H,Labor Day (U.S.)
261025,DEE,Daylight Savings Time Ends (Europe)
261101,DE,Daylight Savings Time Ends (U.S.)
--261126,H,Thanksgiving Day (U.S.)
261225,H,Christmas Day
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- Year 2027 Trading Holidays & DST Dates
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-YYMMDD
270101,H,New Years Day
--270118,H,Martin Luther King, Jr. (U.S.)
--270215,H,President's Day (U.S.)
270314,DB,Daylight Savings Time Begins (U.S.)
270328,DBE,Daylight Savings Time Begins (Europe)
--270326,H,Good Friday
--270531,H,Memorial Day (U.S.)
--270621,H,Juneteenth National Independence Day (U.S.)
--270705,H,Independence Day (U.S.)
--270906,H,Labor Day (U.S.)
271031,DEE,Daylight Savings Time Ends (Europe)
271107,DE,Daylight Savings Time Ends (U.S.)
--271125,H,Thanksgiving Day (U.S.)
271225,H,Christmas Day
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- Year 2028 Trading Holidays & DST Dates
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-YYMMDD
280101,H,New Years Day
--280117,H,Martin Luther King, Jr. (U.S.)
--280221,H,President's Day (U.S.)
280312,DB,Daylight Savings Time Begins (U.S.)
280326,DBE,Daylight Savings Time Begins (Europe)
--280414,H,Good Friday
--280529,H,Memorial Day (U.S.)
--280619,H,Juneteenth National Independence Day (U.S.)
--280704,H,Independence Day (U.S.)
--280904,H,Labor Day (U.S.)
281029,DEE,Daylight Savings Time Ends (Europe)
281105,DE,Daylight Savings Time Ends (U.S.)
--281123,H,Thanksgiving Day (U.S.)
281225,H,Christmas Day