This epoch is the beginning of the 400-year Gregorian leap-year cycle within which digital files first existed; the last year of any such cycle is the only leap year whose year number is divisible by 100. January 1 of this year (1601-01-01) is used as the base of file dates and of Active Directory Logon dates by Microsoft Windows. It is also the date from which ANSI dates are counted and were adopted by the American National Standards Institute for use with COBOL and other computer languages. All versions of the Microsoft Windows operating system from Windows 95 onward count units of one hundred nanoseconds from this epoch as a counter having 63 bits until 30828/9/14 02:48:05.4775807. Events January–March January 11 – Valladolid is briefly the capital of Habsburg Spain under Philip III, before returning indefinitely to Madrid in 1606. January 17 – Treaty of Lyon: France gains Bresse, Bugey and Gex from Savoy, ceding Saluzzo in exchange. February 8 – Robert Devereux, 2nd Earl of Essex, longtime favourite of Queen Elizabeth I of England, begins a rebellion against the Queen. The revolt is crushed the next day. The Earl of Essex and Henry Wriothesley, 3rd Earl of Southampton are arrested and charged with treason. Essex confesses to the plot and then implicates his co-conspirators. February 23 – Michael the Brave, Prince of Wallachia, arrives in Prague to enlist the assistance of Rudolf II, Holy Roman Emperor in driving Ottoman troops out of Transylvania. Michael leaves on March 5, having received a pledge of Austrian troops to the fight. February 25 – The Earl of Essex becomes the first of the Essex's Rebellion participants to be executed. He is beheaded at Tower Hill. His co-conspirator, the Earl of Southampton, sentenced to death, but Queen Elizabeth commutes his penalty to life imprisonment; Southampton will be released two years later. March 5 – The treason trial for five secondary participants in Essex's Rebellion— Gelli Meyrick, Henry Cuffe, Christopher Blount, Charles Danvers, and Sir John Davies — is held in London. All five are found guilty. Meyrick and Cuffe are hanged at Tyburn on March 13, and Blount and Danvers are beheaded at Tower Hill on March 18. Davies is allowed to go free. March 7 – In India, Mughal Empire Prince Daniyal Mirza, son of the Emperor Akbar, is named the ruler of Khandesh, after having completed the conquest of the sultanate