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## EDATE

返回的结果为距离 起始日期 相隔 月数 的日期值。计算时只考虑月数，不考虑天数。

### Syntax

EDATE(起始日期; 月数)

起始日期 一个日期。

月数 所求的月份应在开始日期之前的几个月（负）或之后的几个月（正）。

When entering dates as part of formulas, slashes or dashes used as date separators are interpreted as arithmetic operators. Therefore, dates entered in this format are not recognized as dates and result in erroneous calculations. To keep dates from being interpreted as parts of formulas use the DATE function, for example, DATE(1954;7;20), or place the date in quotation marks and use the ISO 8601 notation, for example, "1954-07-20". Avoid using locale dependent date formats such as "07/20/54", the calculation may produce errors if the document is loaded under different locale settings.

Unambiguous conversion is possible for ISO 8601 dates and times in their extended formats with separators. If a #VALUE! error occurs, then unselect Generate #VALUE! error in LibreOffice - PreferencesTools - Options
- LibreOffice Calc - Formula, button Details... in section "Detailed Calculation Settings", Conversion from text to number list box.

### Example

2001-03-31 前一个月的日期是什么？

=EDATE("2001-03-31";-1) 返回序列数36950. 若格式化为日期，则显示2001-02-28.