Excel 计算日期和年份

Question

In my spreadsheet I have a column that contains a date/time.

I have one field where I am counting the number of Monday's that appear in this column, but also want to create a separate count by year. My current formula is:

 =SUM(--(WEEKDAY(D1:D1353)=2))

How would I alter this so that in the same cells D1:D1353 I can narrow it down so that I am counting the number of times a Monday occurred in, say, 2008? or 2009?

Answer 1

First, I am assuming this is an array formula entered with CTL + SHIFT + ENTER . If that's the case, you should be able to add criteria with multiplication:

{=SUM(--(WEEKDAY(D1:D1353)=2)*(YEAR(D1:D1353)=2008))}

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Note: If you multiply * boolean values, this is "equivalent" to having AND conditions between your statements. If you wish to use OR logic, you can use addition + . For example, the same formula with addition + :

{=SUM(--(WEEKDAY(D1:D1353)=2)+(YEAR(D1:D1353)=2008))}

Would translate to: Give me all dates in range D1:D1353 that are Monday's or dates in range D1:D1353 equal to 2008.