This homepage of BADs (Basic Arithmetic Dates) is going to be re-designed during winter break 2009-2010(didn't happen)summer break 2011(didn't happen)summer break 2013?(didn't happen)... maybe someday.The first BAD (Basic Arithmetic Date) was created on 25 February 2006 and it was for the date 03/01/06. BADs were done informally from time-to-time during lecture, but I decided to create a BAD collection with each BAD being its own BAB.
During the first couple weeks of April, a bunch of BADs were created and I realized that the BADs were going to bloat the BAB collection. Consequently, I decided to do one BAB a month that contained the BADs for that respective month.
Original BADs (One BAD Per BAB)
New BADs (One BAB Per Month Containing Multiple BADs)
- January 2006 Basic Arithmetic Dates [empty; extra credit]
- February 2006 Basic Arithmetic Dates [complete]
- March 2006 Basic Arithmetic Dates [complete]
- April 2006 Basic Arithmetic Dates [partial; extra credit]
- May 2006 Basic Arithmetic Dates [partial; extra credit]
- August 2006 Basic Arithmetic Dates [partial; extra credit]
- September 2006 Basic Arithmetic Dates [extra credit]
- BADs On BABs Birthdays [09 February 2007]
- 07/14/07
- August 2008 BADs
- Pi Approximation Day 2009 is Also a Pi BAD [22 July 2009]
- 25 July 2009 Was a Good BAD (and a Pi Approximation Day) [25 July 2009]
- 8 July 2009 Was an Average BAD [09 July 2009]
- 6 June 2009 is a BAD; and a D-Day and Tetris Anniversary [06 June 2009]
- 02/13/09 [Friday the 13th]
- 02/09/09 [BABs 4th anniversary]
GDT has minimized the creation of Basic Arithmetic Dates (BADs) primarily because they use 2-digit years. The Y2K problem taught us that 2-digit years should be avoided; therefore, BADs are bad. BADs are based upon 2-digit years at a time when we should be switching to using 5-digit years.
Post-BADs BADs
2021...
- February 2021 BADs [created 25 January 2021; posted 01 February 2021]
- January 2021 BADs [created 25 December 2020; posted 01 January 2021]
2020...
- December 2020 BADs [created 30 November 2020; posted 01 December 2020]
- November 2020 BADs [created 01 November 2020; posted 01 November 2020]
- October 2020 BADs [created 28 September 2020; posted 01 October 2020]
- September 2020 BADs [created 31 August 2020; posted 01 September 2020]
- August 2020 BADs [created 31 July 2020; posted 01 August 2020]
- July 2020 BADs [created 30 June 2020; posted 01 July 2020]
- June 2020 BADs [created 31 May 2020; posted 01 June 2020]
- May 2020 BADs [created 29 April 2020; posted 01 May 2020]
- April 2020 BADs [created 30 March 2020; posted 01 April 2020]
- March 2020 BADs [created 01 March 2020; posted 01 March 2020]
- February 2020 BADs [created 02 February 2020; posted 02 February 2020]
- January 2020 BADs [created 29 December 2019; posted 01 January 2020]
2019...
- December 2019 BADs [created 29 November 2019; posted 01 December 2019]
- November 2019 BADs [created 01 November 2019; posted 01 November 2019]
- October 2019 BADs [created 28 September 2019; posted 01 October 2019]
- September 2019 BADs [created 27 August 2019; posted 01 September 2019]
- August 2019 BADs [created 29 July 2019; posted 01 August 2019]
- July 2019 BADs [created 01 July 2019; posted 01 July 2019]
- June 2019 BADs [created 30 May 2019; posted 01 June 2019]
- May 2019 BADs [created 30 April 2019; posted 01 May 2019]
- April 2019 BADs [created 01 April 2019; posted 01 April 2019]
- March 2019 BADs [created 01 March 2019; posted 01 March 2019]
- February 2019 BADs [created 31 January 2019; posted 01 February 2019]
- January 2019 BADs [created 30 December 2018; posted 01 January 2019]
2018...
- December 2018 BADs [created 30 November 2018; posted 01 December 2018]
- November 2018 BADs [created 31 October 2018; posted 01 November 2018]
- October 2018 BADs [created 30 September 2018; posted 01 October 2018]
- September 2018 BADs [created 30 August 2018; posted 01 September 2018]
- August 2018 BADs [created 30 July 2018; posted 30 July 2018]
- July 2018 BADs [created 29 June 2018; posted 29 June 2018]
- June 2018 BADs [created 29 May 2018; posted 29 May 2018]
- May 2018 BADs [created 29 April 2018; posted 01 May 2018]
- April 2018 BADs [created 30 March 2018; posted 01 April 2018]
- March 2018 BADs [created 28 February 2018; posted 01 March 2018]
- February 2018 BADs [created 30 January 2018; posted 01 February 2018]
- January 2018 BADs [created 28 December 2018; posted 01 January 2018]
2017...
- December 2017 BADs [created 12 December 2017; posted 12 December 2017]
- November 2017 BADs [created 31 October 2017; posted 01 November 2017]
- October 2017 BADs [created 30 September 2017; posted 01 October 2017]
- September 2017 BADs [created 28 August 2017; posted 01 September 2017]
- August 2017 BADs [created 25 July 2017; posted 01 August 2017]
- July 2017 BADs [created 01 July 2017; posted 01 July 2017]
- June 2017 BADs [created 05 June 2017; posted 05 June 2017]
- May 2017 BADs [created 30 April 2017; posted 01 May 2017]
- April 2017 BADs [created 30 March 2017; posted 01 April 2017]
- March 2017 BADs [created 28 February 2017; posted 01 March 2017]
- February 2017 BADs [created 31 January 2017; posted 01 February 2017]
- January 2017 BADs [created 28 December 2016; posted 01 January 2017]
2016...
- December 2016 BADs [created 30 November 2016; posted 01 December 2016]
- November 2016 BADs [created 29 October 2016; posted 01 November 2016]
- October 2016 BADs [created 27 September 2016; posted 01 October 2016]
- 7 September 2016 is a Good BAD [created 07 September 2016; posted 07 September 2016]
- September 2016 BADs [created 27 August 2016; posted 01 September 2016]
- August 2016 BADs [created 01 August 2016; posted 01 August 2016]
- July 2016 BADs [created 27 June 2016; posted 01 July 2016]
- June 2016 BADs [created 29 May 2016; posted 01 June 2016]
- May 2016 BADs [created 26 April 2016; posted 01 May 2016]
- April 2016 BADs [created 25 March 2016; posted 01 April 2016]
- March 2016 BADs [created 25 February 2016; posted 01 March 2016]
- February 2016 BADs [created 25 January 2016; posted 01 February 2016]
- January 2016 BADs [created 22 December 2015; posted 01 January 2016]
2015...
- December 2015 BADs [created 28 November 2015; posted 01 December 2015]
- November 2015 BADs [created 28 October 2015; posted 01 November 2015]
- October 2015 BADs [created 23 September 2015; posted 01 October 2015]
- September 2015 BADs [created 28 August 2015; posted 01 September 2015]
- August 2015 BADs [created 30 July 2015; posted 01 August 2015]
- July 2015 BADs [created 22 June 2015; posted 24 June 2015]
- June 2015 BADs [created 27 May 2015; posted 31 May 2015]
- May 2015 BADs [created 26 April 2015; posted 01 May 2015]
- April 2015 BADs [created 29 March 2015; posted 01 April 2015]
- March 2015 BADs [created 23 February 2015; posted 01 March 2015]
- February 2015 BADs [created 25 January 2015; posted 01 February 2015]
- January 2015 BADs [created 28 December 2014; posted 01 January 2015]
2014...
- December 2014 BADs [created 30 November 2014; posted 01 December 2014]
- November 2014 BADs [created 30 October 2014; posted 01 November 2014]
- October 2014 BADs [created 28 September 2014; posted 01 October 2014]
- September 2014 BADs [created 30 August 2014; posted 01 September 2014]
- August 2014 BADs [created 30 July 2014; posted 01 August 2014]
- July 2014 BADs [created 29 June 2014; posted 01 July 2014]
- June 2014 BADs [created 31 May 2014; posted 01 June 2014]
- May 2014 BADs [created 27 April 2014; posted 01 May 2014]
- April 2014 BADs [created 29 March 2014; posted 01 April 2014]
- March 2014 BADs [created 27 February 2014; posted 01 March 2014]
- February 2014 BADs [created 29 January 2014; posted 01 February 2014]
- January 2014 BADs [created 17 December 2013; posted 01 January 2014]
2013...
- December 2013 BADs [created 30 November 2013; posted 01 December 2013]
- November 2013 BADs [created 01 November 2013; posted 01 November 2013]
- October 2013 BADs [created 29 September 2013; posted 01 October 2013]
- September 2013 BADs [created 01 September 2013; posted 01 September 2013]
- August 2013 BADs [created 01 August 2013; posted 01 August 2013]
- July 2013 BADs [created 30 June 2013; posted 01 July 2013]
- June 2013 BADs [created 22 May 2013; posted 22 May 2013]
- May 2013 BADs [created 30 April 2013; posted 01 May 2013]
- April 2013 BADs [created 30 April 2013; posted 30 April 2013]
- March 2013 BADs [created 30 April 2013; posted 30 April 2013]
- February 2013 BADs [created 29 April 2013; posted 30 April 2013]
- January 2013 BADs [created 29 April 2013; posted 30 April 2013]
2012...
- December 2012 BADs [created 01 December 2012; posted 30 April 2013]
- November 2012 BADs [created 01 November 2012; posted 01 November 2012]
- October 2012 BADs [created 30 September 2012; posted 01 October 2012]
- September 2012 BADs [created 01 September 2012; posted 01 September 2012]
- August 2012 BADs [created 01 August 2012; posted 01 August 2012]
- July 2012 BADs [created 01 July 2012; posted 01 July 2012]
- June 2012 BADs [created 31 May 2012; posted 01 June 2012]
- May 2012 BADs [created 30 April 2012; posted 01 May 2012]
- April 2012 BADs [created 29 March 2012; posted 01 April 2012]
- March 2012 BADs [created 27 February 2012; posted 02 March 2012]
- February 2012 BADs [created 27 February 2012]
- January 2012 BADs [created 31 December 2011; posted 01 January 2012]
2011...
- December 2011 BADs [created 01 December 2011]
- November 2011 BADs [created 31 October 2011; posted 03 November 2011]
- October 2011 BADs [created 29 September 2011; posted 02 October 2011]
- September 2011 BADs [created 30 August 2011; posted 01 September 2011]
- August 2011 BADs [created 30 July 2011; posted 02 August 2011]
- July 2011 BADs [created 30 June 2011; posted 01 July 2011]
- June 2011 BADs [created 31 May 2011; posted 01 June 2011]
- May 2011 BADs [created 27 April 2011; posted 01 May 2011]
- April 2011 BADs [created 29 March 2011; posted 01 April 2011]
- March 2011 BADs [created 27 February 2011; posted 01 March 2011]
- February 2011 BADs [created 31 January 2011; posted 01 February 2011]
- January 2011 BADs [created 02 January 2011; posted 02 January 2011]
2010...
- December 2010 BADs [created 29 November 2010; posted 01 December 2010]
- November 2010 BADs [created 29 October 2010; posted 03 November 2010]
- October 2010 BADs [created 30 September 2010; posted 01 October 2010]
- September 2010 BADs [created 30 August 2010; posted 01 September 2010]
- August 2010 BADs [created 26 July 2010; posted 01 August 2010]
- July 2010 BADs [created 30 June 2010; posted 01 July 2010]
- June 2010 BADs [created 23 May 2010; posted 09 June 2010]
- May 2010 BADs [created 28 April 2010]
- April 2010 BADs [created 28 March 2010]
- March 2010 BADs [created 28 February 2010]
- February 2010 BADs [created 29 January 2010]
- January 2010 BADs [created 31 December 2009]
2009...
- December 2009 BADs [created 27 November 2009]
- November 2009 BADs [created 01 November 2009]
- October 2009 BADs [created 29 September 2009]
- September 2009 BADs [created 31 August 2009]
- August 2009 BADs [created 28 July 2009; posted 03 August 2009]
- July 2009 BADs [created 09 July 2009]
- June 2009 BADs [created 07 June 2009]
- May 2009 BADs [created on May Day 2009]
- April 2009 BADs [created 06 April 2009]
- March 2009 BADs [created on Square Root Day 2009]
- February 2009 BADs [created on 27 November 2009]
- January 2009 BADs [created on 27 November 2009]
2000...
- January 2000 BADs [created 05 May 2015; posted 05 May 2015]
To Do: Create BADs for 2008, 2007, 2006, 2005, 2004, 2003, 2002, 2001, 2000
Creator: Gerald Thurman
[gthurman@gmail.com]
Created: 05 April 2006