示例 1:将 8 个月添加到 2026 年 1 月 15 日,得出 2026 年 9 月 15 日。Example 2: The number of full months between March 31, 2026 and February 28, 2025 is 23 months when using end-of-month rules; counting full months depends on whether you require the same day of the month.