我想设置一个重复事件，这样我就不必每年重新创建一个。但是，日历的内置选项无法轻松处理事件的重复。这是一个整个周末的活动，并且尽可能在当月晚些时候发生，以便事件仍可以在当月内进行。
例如，以下是 2011 年几个月事件的重复情况：
Month Dates Saturday Sunday
Jan 29-30 5th (Last) 5th (Last)
Feb 26-27 4th (Last) 4th (Last)
Mar 26-27 4th (Last) 4th (Last)
Apr 23-24 4th 4th (Last)
May 28-29 4th (Last) 5th (Last)
Jun 25-26 4th (Last) 4th (Last)
Jul 30-31 5th (Last) 5th (Last)
Aug 27-28 4th (Last) 4th (Last)
Sep 24-25 4th (Last) 4th (Last)
Oct 29-30 5th (Last) 5th (Last)
Nov 26-27 4th (Last) 4th (Last)
Dec 24-25 4th 4th (Last)
如您所见，以下情况无法可靠地触发该事件：
- 任何数字日期。
- 任何第四个或第五个工作日。
- 最后一个星期六。
我能想到的唯一将此事件设置为单一、可识别触发器的方法是将其设置为在“最后一个星期日”结束时重复，并且持续时间为负两天。显然，这在大多数日历程序中都不是选项。
还有其他我还没想过或意识到的方法可以正确配置它吗？