《宋书·志·卷十三》
闰余大于二百四十七则该年置闰。
闰余二百四十七以上，其年有闰。
The year will have an intercalary month if the total excess is greater than 247.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 闰余二百四十七以上，其年有闰。 [/INST] The year will have an intercalary month if the total excess is greater than 247.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 闰余二百四十七以上，其年有闰。
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The year will have an intercalary month if the total excess is greater than 247.
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