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The Big Bang Theory

Timeline of the Third Season

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Timeline
This chronology is a timeline of events that happened during the third season, approximately August, 2009 to May, 2010.

Timeline

August 16, 2009 Sheldon sends notes to Beverly Hofstadter hre paper on quantum brain function  [The Maternal Congruence]

41. “The Electric can opener fluctuation”

August 16, 2009 – return after 3 months at magnetic north pole

August 17, 2009 – Sheldon runs away to Texas

August 18, 2009 – Leonard, Raj & Howard travel to Texas, talk Sheldon into returning

August 19, 2009 – Penny & Leonard finally hook up

42. "The Jiminy Conjecture"

August 20, 2009 – Everyone discusses Leonard and Penny’s hookup last night, they catch a cricket

August 21, 2009 – they meet Dr. Crawley & Leonard & Penny decide not to just stay friends

August, 2009 – August 2010 Sheldon goes accidentally on booze cruise to Mexico [The Friendship Contraction]

43. “The Gothowitz deviation” 

Monday October 5, 2009 -  Sheldon tries operant conditioning on Penny, while Howard & Raj go to a Goth club, but don’t get tattoos

44. “The Pirate Solution”   

October 12, 2009 Raj is to be deported

October 14, 2009 - interview with Laughlin and Millstone , Sheldon asks Raj to help with “string theory implications of gamma rays from dark matter annihilation” 

October 15, 2009    Raj accepts the job with Sheldon

October 16, 2009 – Howard interrupts Leonard and Penny’s night together , Sheldon & Raj disagree

Sunday, October 17, 2009 -  Howard makes breakfast, Raj & Sheldon make up

45. “The Creepy Candy Coating Corollary”

October 19, 2009 – after playing “mystic Warlords of Ka’ah” Howard invokes the girlfriend pact with Leonard

October 20, 2009  – Howard reminds Leonard who asks Penny

Saturday, October 24, 2009 – mystic warlords of ka’ah tournament. Howard and   Bernadette’s first date

46. “The Cornhusker Vortex”

October 31, 2009 – after kite fighting Leonard invited to Penny’s football party

November 2, 2009 – after Monday night football, Sheldon teaches Leonard about football

Saturday, November 7, 2009  – the football party

47. “The Guitarist Amplification”

November 9, 2009 – discussion of  Justin arriving

November 10, 2009 – Penny and Leonard keep arguing

November 11, 2009 – Sheldon at the Cheesecake Factory, big fight between Penny and Leonard

Sunday, November 15, 2009 – Justin arrives and sleeps on Leonard & Sheldon’s couch

48. “The Adhesive Duck Deficiency” 

Monday, November 16, 2009  Raj, Howard & Leonard watch meteors, Penny dislocates  her shoulder, Sheldon gets a ticket  

49. “The Vengeance Formulation”

November 30, 2009 – Howard & Bernadette’s third date

December 1, 2009 – Sheldon announces he will be on NPR ‘next week’

Thursday, December 10, 2009  – Sheldon asks Howard to review talking points

Friday, December 11, 2009 Sheldon is on Science Friday, Howard’s bath where he        fantasizes about  Katie Sackhoff and later proposes to Bernadette

December 12, 2009 – Sheldon’s revenge on Kripke

50. “The Gorilla Experiment”

December 14, 2009 – Bernadette express interest in Leonard’s work

December 15, 2009 – Penny asks Sheldon to teach her “a little physics”, Howard      confronts Leonard

December 16, 2009 – Sheldon teaches Penny a little physics

December 17, 2009 – Howard & Bernadette square off in Leonard’s lab

December 18, 2009 – a meal with everyone

Bernadette’s grandmother dies [The Maternal Capacitance]

51. “The Maternal Congruence”

December 21, 2009 – Sheldon complains about Christmas shows

December 22, 2009 – Penny & Leonard decorate tree

December 23, 2009 – Leonard’s mom arrives, goes out with Penny

December 24, 2009 – she leaves

52. “The Psychic Vortex”

January 11, 2010 – Howard & Bernadette double date with Leonard & Penny, who gets  upset when Leonard mocks her belief in psychics , Raj and Sheldon go out meet Abby & Martha

January 12, 2010 – Raj bribes Sheldon to go out again with the girls 

53. “The Bozeman Reaction”

January 18, 2010 – a break- in at Leonard and Sheldon’s apartment

January 19, 2010 – Howard installs a security system 

January 20, 2010 – Sheldon leaves

January 21, 2010 – Sheldon in Bozeman

January 22, 2010 – Sheldon returns

54. “The Einstein Approximation”

February 2, 2010 – Sheldon stuck on a problem, Leonard, Penny, Howard and Bernadette  go disco roller skating,   Sheldon plays in ball pit

February 3, 2010 – Sheldon goes in Penny’s apartment

February 4, 2010 – Sheldon visits the employment office & works at the Cheesecake  Factory

55. “The Large Hadron Collision”

February 8, 2010 – Leonard tells of trip to Geneva

February 9, 2010 – lunch at Cal Tech

February 10, 2010 – Sheldon plots to go on the trip by playing on Penny’s sympathy

February 14, 2010 - Leonard & Raj in Geneva 

56. “The Excelsior Acquisition”

March 1, 2010 – Sheldon learns he got a ticket & about Stan Lee comic book signing

Thursday, March 4 , 2010 – comic book signing & Sheldon in court 

March 5, 2010 – Penny and Sheldon visit Stan Lee

57. “The Precious Fragmentation”

March 8, 2010 – they buy a box of stuff find a ring  

March 9, 2010 – they learn what the ring is, Sheldon tries to steal

March 10, 2010 – the contest to see who gets ring

March 11, 2010 – Leonard mails the ring to Peter Jackson, Sheldon tries to steal

58. “The Pants Alternative”

March 22, 2010 – Sheldon learns he won Chancellor’s science award, but must give a speech

March 23, 2010 – intervention, Sheldon does yoga with Raj 

March 24, 2010 – Sheldon goes shopping with Penny and psychoanalysis with Leonard   

March 25, 2010- the banquet and speech

March 26, 2010 – Sheldon has questions about last night 

59. “The Wheaton Recurrence”

April 12, 2009 – Leonard tells Penny “I love you” 

April 13, 2009 – bowling w/Wil Wheaton 

April 14, 2009 – Penny dumps Leonard [8 months after “the Electric Can Opener        Fluctuation” as per “the Decoupling Fluctuation]

April 15, 2009 – guys at the comic book store in female super hero outfits 

60. “The Spaghetti Catalyst”

May 3, 2010 – Sheldon eats with both Penny & the guys

May 4, 2010 – Penny & Leonard talk in the laundry room   

Saturday, May 8, 2010 – Penny takes Sheldon to Disneyland 

61. “The Plimpton Stimulation”

May 10, 2010 – they learn of Elizabeth Plimpton’s  arrival

May 11, 2010 – Elizabeth Plimpton arrives and hooks up with Leonard

May 12, 2010 – Penny confronts Leonard  

62. “The Staircase Implementation”

May 17, 2010 - Sheldon & Leonard fight

63. “The Lunar Excitation”

May 25, 2010 – they point a laser at the Moon with Zack and Penny there

May 26, 2010 – find Amy Farrah Fowler, last appearance of Leslie Winkle

May 29, 2010 – Sheldon & Amy meet for first time

April, 2010 to August, 2010 - Howard has his disastrous non-date with Emily Sweeney [The Relationship Diremption] 

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