閏intercalation; illegitimate throneStrokes12OnジュンKunうるうParts門gate王kingBuilt from 閏潤wetWords with 閏正閏せいじゅん · seijunnormal and leap (years); legitimate and illegitimate dynasties閏月うるうづき · uruuzukiintercalary month (lunar calendar); leap month閏年うるうどし · uruudoshileap year閏秒うるうびょう · uruubyouleap second閏日うるうび · uruubileap dayStudy it in Yanamino