How long have Lilliput and Blefuscu been at war?

In "Gulliver's Travels," the conflict between Lilliput and Blefuscu has lasted for 36 moons, making this the correct answer. The war is a result of a longstanding dispute over trivial matters, reflecting the absurdity of human conflicts. The author, Jonathan Swift, uses the war to satirize real-world political and religious disputes of his time, highlighting how such long-standing disagreements often have little substantive basis. The duration of 36 moons serves to emphasize the extent of the conflict and the sheer insignificance of the reasons behind it. This detail is significant in the narrative as it showcases the theme of absurdity in human endeavor, as well as serves as a commentary on the nature of war itself.