Kalandar lunisolar tsarin kalanda ce da ta ginu a kan zagayowar wata da kuma zagayowar rana. Tsari ne da ke amfani da sifofin wata wajen tantance farkon kowane wata da karshen wata, haka nan kuma yana amfani da tsarin zagayowar rana wajen tantance tsawon shekara. an ayyana wata a matsayin lokacin da wata ke tafiyar da cikakkiyar zagayowar safofinsa, tun daga sabon wata zuwa cikakken wata da komawa zuwa sabon wata. Duk da haka, tun da watan yana da tsawon kwanaki 29.5, kalandar lunisolar yana buƙatar ƙara ƙarin wata lokaci-lokaci don daidaita watannin wata da shekarar hasken rana. Kalanda na kasar Sin, wanda ya dogara ne akan zagayowar wata da rana. Yana amfani da watanni 12 na wata don sanin farkon ko ƙarshen kowace shekara, amma kuma yana ƙara ƙarin wata a kowane ƴan shekaru don kiyaye watannin wata da shekarar hasken rana.