Question: How many years must pass before celebrating the type of anniversary celebrated in the Imperial Capital on a February morning? Passage 1:Afterwards Dashwood took eight American merchantmen, and on 15 June 1812, he captured the Hope, a merchant ship off the north of Gothland. On 14 August 1812 he was appointed captain of HMS Cressy of 74 guns, and given a piece of plate by the officers of HMS Pyramus. After serving in the North Sea under Admiral Sir William Young, Dashwood escorted a convoy to the West Indies, whence he returned with another of equal importance. At the review of the fleet at Spithead, in the summer of 1814, he steered the Royal barge. Afterwards he took part, commanding HMS Norge of 74 guns, in the Battle of New Orleans, where he assisted Admiral Pulteney Malcolm in the debarkation of the army, being reported by Sir Alexander Cochrane. He was also present at the Battle of Lake Borgne, where a few gunboats of the Norge, in company with other small vessels, captured five American gunboats. In 1815, when at anchor in Port Royal, his ship was struck by lightning, which broke the main-topgallant-mast in three pieces, shivered the maintop-mast and brought the mizentop-mast and topgallant-mast down on to deck. In 1821 he was given command of HMS Windsor Castle of 74 guns, and HMS Impregnable, of 104 guns, as Cochrane's flag-captain. He recommissioned Windsor Castle on 4 January 1822, as part of the guard-ships in Hamoaze. In 1825 he was put onto half-pay, and was made a rear-admiral on 22 July 1830. He assumed the rank of vice-admiral on 23 November 1841. Charles died while at service, on 21 September 1847. Consequently, on 22 September 1847, the Admiralty promoted him posthumously to the rank of admiral.
 Passage 2:The tercentenary was kicked off in Imperial Capital St. Petersburg on a rainy February morning. The event had been on everyones' lips for several weeks leading up the actual date, and dignitaries from the whole of the Empire had gathered in the capital's grand hotels: princes from the Baltic and Poland, high-priests from Armenia and Georgia in the Caucasus, and mullahs and tribal chiefs from Central Asia alongside the Khan of Khiva and the Emir of Bukhara. Additionally there was a large group of visitors from the provinces and workers, which left the usual well-dressed promenaders of the Winter Palace outnumbered. The city was bustling with these visitors, and Nevsky Prospect experienced the worst traffic jams in history, due to the converging of cars, carriages and trams. The streets themselves were decorated in the Imperial colors of blue, red and white, statues were dressed up with ribbons and garlands, and portraits of the line of Tsars going all the way back to the Romanov dynasty's founder Michael were hung up on the facades of banks and stores. Over tram lines were chains of light hung up, which spelled out 'God Save the Tsar' or portrayed the Romanov double-headed eagle with '1613–1913' spelled out underneath it. For many of the provincial visitors this was their first sight of electric light, and they stood in wonder of the 'columns, arcs and obelisks of light'.
 Passage 3:By 775, one of the military governors who had only nominally been submissive to Emperor Daizong, Tian Chengsi the military governor of Weibo Circuit (魏博, headquartered in modern Handan, Hebei), had particularly offended not only the imperial government but also his fellow warlords—by seizing much of Zhaoyi Circuit (昭義, headquartered in modern Anyang, Henan) after the death of its military governor Xue Song in 773; by looking down on Li Zhengji the military governor of Pinglu Circuit (平盧, headquartered in modern Tai'an, Shandong) and Li Baochen the military governor of Chengde (成德, headquartered in modern Shijiazhuang, Hebei); and by killing Li Baochen's brother Li Baozheng (李寶正), who was also his son-in-law, after his own son Tian Wei (田維) died after colliding with Li Baozhen while playing polo. Li Baochen and Li Zhengji thus offered to attack Tian, and Emperor Daizong decided to take this opportunity to destroy the rebellious Tian. As Zhu Tao was then submissive to the imperial government, he joined forces with Li Baochen and another general loyal to the imperial government, Xue Jianxun (薛兼訓), to attack Weibo from the north, while Li Zhengji and Li Zhongchen attacked from the south. The joint forces had initial successes, but when Zhu and Li Baochen attacked Cang Prefecture (滄州, in modern Cangzhou, Hebei), which was defended by Tian's cousin Tian Tingjie (田庭玠), they could not capture it quickly. Meanwhile, Tian Chengsi had persuaded Li Zhengji to withdraw with flattery. In addition, Li Baochen was offended when an imperial eunuch, Ma Chengqian (馬承倩), who had visited Li Baochen's army, was so dissatisfied with Li Baochen's gift to him that he threw it on the ground, and Tian was also able to use hoaxes to persuade Li Baochen that if he joined forces with Tian to attack Lulong, he would be successful. Li Baochen thus turned against Zhu, launching a surprise attack on him, but was unable to kill Zhu, effectively ending any hopes of the campaign against Tian and subsequently creating an enmity between the Chengde and Lulong Circuits. Emperor Daizong was subsequently forced to reaccept Tian Chengsi's nominal submission.

Output: 2