Question: When did Six Flags file for bankruptcy protection?
About the article "Six Flags", section "Abstract".

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The company's cash flow had decreased by over 120 million dollars annually during the Shapiro years and in October 2008, Six Flags was warned its stock value had fallen below the required minimums to remain listed on the New York Stock Exchange.
With the 2008–2009 global financial crisis weighing both on consumer spending and the ability to access credit facilities, Six Flags was believed to be unable to make a payment to preferred stockholders due in August 2009.
Management saw the business as a sound one, noting that attendance across the company's parks increased slightly in 2008 compared to 2007.
Six Flags CEO Mark Shapiro said that the company's problem was the declining attendance and cash flow created by his new management initiatives .
If not resolved, the company warned in its 2008 annual report that the situation might require a Chapter 11 bankruptcy filing, with Six Flags already retaining counsel should that occur.
The company stated at the time that it expected business to continue as normal in the event of such a filing, although one analyst believed attendance at the company's parks would decrease by six percent, suggesting parents would be leery of letting their children ride a roller coaster operated by a bankrupt company.
In April 2009, the New York Stock Exchange announced it would delist Six Flags' stock on April 20, a decision that the company did not intend to appeal.
On June 1, 2009, Six Flags announced they would delay their $15 million debt payment further using a 30-day grace period.
Less than two weeks later, on June 13, the firm filed for Chapter 11 bankruptcy protection, but issued a statement that the parks would continue to operate normally while the company restructured.
On August 21, 2009, Six Flags' Chapter 11 restructuring plan was announced in which lenders would control 92% of the company in exchange for cancelling $1.13 billion in debt.
The approval of this plan is pending per the decision of the presiding U.S. Bankruptcy Judge.
One component of the restructuring was negotiating a new lease agreement with the Kentucky State Fair Board, which owned much of the land and attractions for Six Flags Kentucky Kingdom.
Six Flags had asked to forgo rent payments for the remaining nine years of its current lease agreement in exchange for profit-sharing from the park's operations.
When it appeared that the offer had been rejected, Six Flags announced in February 2010 that it would not re-open the park.
However, the Kentucky State Fair Board stated at the time that they were still open to negotiating a revised lease agreement.
On April 28, 2010, the company's bondholders reached an agreement on a reorganization plan.
Junior note holders, including hedge funds Stark Investments and Pentwater Capital Management, assumed control of the company, while senior note holders were paid in cash.
Despite objections from some parties who stood to gain nothing, the bankruptcy judge approved the plan on April 30, 2010.
As part of the settlement, Chairman of the Board Dan Snyder was removed, while Chief Executive Officer Mark Shapiro briefly remained in his post. 
Six Flags Entertainment Corp. is the world's largest amusement park corporation based on number of properties, and the fifth-most popular in terms of attendance.
The company maintains 18 properties throughout North America consisting of theme parks, thrill parks, water parks, and family entertainment centers.
In 2009, Six Flags properties hosted 23.9 million guests.
The company was founded in Texas and took its name from its first property, Six Flags Over Texas.
The company maintains a corporate office in Midtown Manhattan, New York City and its headquarters are in Grand Prairie, Texas.
On June 13, 2009, the corporation filed for Chapter 11 bankruptcy protection and successfully exited the restructuring on May 3, 2010.
Six Flags officially emerged from bankruptcy protection as Six Flags Entertainment Corp. on May 3, 2010, and announced plans to issue new stock on the New York Stock Exchange.
Amid suspected disagreements regarding the future of the company with the board, Shapiro left the company and Al Weber, Jr. was brought in as interim President and CEO.
The company announced their corporate headquarters would move from New York City to Grand Prairie, Texas. 
Murchison ran into financial difficulties as a result of questionable investments and mismanagement at a time when the real estate market was collapsing, at the same time as a sharp decrease in the price of oil.
In February 1985, he had to file for personal bankruptcy protection after three creditors, the Toronto-Dominion Bank, the Kona-Post Corporation and Citicorp, filed a petition to force him into bankruptcy.
Lawyers involved in the case called it one of the largest personal bankruptcy cases in United States history.
He died of pneumonia in 1987 in Dallas. 
Jim Sensenbrenner, Republican chairman of the House Judiciary Committee claimed: "If someone in Katrina is down and out, and has no possibility of being able to repay 40 percent or more of their debts, then the new bankruptcy law doesn't apply.
The Justice Department's US Trustee program has since said it would not attempt to enforce the means test rules for disaster victims, including those affected by Hurricane Katrina.
The Justice Department Trustees oversee the administration of bankruptcy law and are able to file the motions necessary to enforce the means test.
Despite these assurances, bankruptcy judges are still able to enforce these rules "sua sponte".
The Department of Justice also indicated it would not oppose a debtor's eligibility to file bankruptcy because the debtor did not fulfill the credit counseling requirements before filing.
U.S. Trustees have the discretion to grant waivers of the credit counseling requirements to debtors.
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