Question: When does it start snowing in the city where the author of Flight died?

<P0-S0> Flight is a play by Russian writer Mikhail Bulgakov. <P0-S1> It is set during the end of the Russian Civil War, when the remnants of the White Army are desperately resisting the Red Army on the Crimean isthmus. <P0-S2> The lives of the abandoned Serafima Korzukhina, the university professor Sergei Golubkov and the White generals Charnota and Khludov are closely intertwined. <SEP> <P1-S0> Snow cover (averaging 3 -- 5 months per year) is formed at the beginning of November and melts in beginning of April, but in recent years snow cover has lasted shorter than usual. <P1-S1> For example, in the winter of 2006 -- 2007 the snow cover did n't form until the end of January, and melted at the beginning of March; in 2007 -- 2008, the snow cover melted at the end of February, and in the 2008 -- 2009 winter, snow cover did n't form until the end of December, which is one month later than usual. <P1-S2> Yet in 2011 - 2012 it melted in the middle of April. <SEP> <P2-S0> The Bulgakov Museum in Moscow is a writer's house museum which commemorates the life and work of author Mikhail Afanasyevich Bulgakov in an apartment where he lived in Moscow, Russia, and in which he set portions of his novel "The Master and Margarita". <P2-S1> Graffiti, including text from the novel and drawings of its characters, have decorated the external walls and stairwells of the apartment building since the beginning of perestroika. <P2-S2> It is located about two blocks from Patriarch Ponds, the scene of the opening chapter of the novel, where the Moscow city government had planned to erect statues commemorating the novel. <P2-S3> It is close to Mayakovskaya metro station <SEP> <P3-S0> master and commander is a nautical historical novel by the english author patrick o'brian, first published in 1969 in the us and 1970 in uk. <P3-S1> the book proved to be the start of the 20-novel aubrey-maturin series, set largely in the era of the napoleonic wars, that o'brian continued working on up until his death in 2000. <SEP> <P4-S0> aristotle provided a philosophical discussion of the concept of a force as an integral part of aristotelian cosmology. <P4-S1> in aristotle's view, the terrestrial sphere contained four elements that come to rest at different "natural places" therein. <P4-S2> aristotle believed that motionless objects on earth, those composed mostly of the elements earth and water, to be in their natural place on the ground and that they will stay that way if left alone. <P4-S3> he distinguished between the innate tendency of objects to find their "natural place" (e.g., for heavy bodies to fall), which led to "natural motion", and unnatural or forced motion, which required continued application of a force. <P4-S4> this theory, based on the everyday experience of how objects move, such as the constant application of a force needed to keep a cart moving, had conceptual trouble accounting for the behavior of projectiles, such as the flight of arrows. <P4-S5> the place where the archer moves the projectile was at the start of the flight, and while the projectile sailed through the air, no discernible efficient cause acts on it. <P4-S6> aristotle was aware of this problem and proposed that the air displaced through the projectile's path carries the projectile to its target. <P4-S7> this explanation demands a continuum like air for change of place in general.