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A perpetual calendar watch features the calendar mechanism that auto-corrects for the different days of each month, regardless of whether it is 28, 29, 30 or 31, and that means it takes leap years into account as well. <\/p>\n","protected":false},"featured_media":64083,"template":"","news_category":[948],"brand":[],"class_list":["post-64086","news","type-news","status-publish","has-post-thumbnail","hentry","news_category-watch-knowledge-zh"],"acf":[],"yoast_head":"\nPerpetual Calendar<\/title>\n<meta name=\"description\" content=\"A perpetual calendar watch features the calendar mechanism that auto-corrects for the different days of each month, regardless of whether it is 28, 29, 30 or 31, and that means it takes leap years into account as well.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.cortinawatch.com\/zh\/news\/perpetual-calendar\/\" \/>\n<meta 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