https://blog.gongquiz.com/2021/09/13/%ec%84%9d%ec%96%91%ec%9d%84-%ec%a3%bc%ea%b4%91%ec%9a%a9daylight-type%ec%bb%ac%eb%9f%ac-%ed%95%84%eb%a6%84%ec%9c%bc%eb%a1%9c-%ec%b4%ac%ec%98%81%ed%95%98%ec%98%80%eb%8d%94%eb%8b%88-%eb%b6%89%ec%9d%80/