Truncation is a mathematical and trigonometric function in Excel that removes the fractional part of a number, resulting in an integer. It is an essential tool for Excel analysts to know. The TRUNC (date) function returns the date with the part of the time of day **truncated** to the unit specified by the fmt format model. The value returned is always of the DATE data type, even if you specify a different datetime data type for the date.

If you omit fmt, the date is truncated to the nearest day. The Math, trunc () function returns the integer part of a number by removing the fractional digits. This means that any decimal places after the number will be removed. For example, if you have a number such as 3.14159, then using the trunc () function will result in 3.The TRUNC () function can also be used to get the date with the part of the time of day truncated to a specific unit of measure.

It works according to the rules of the Gregorian calendar. This means that it will take into account leap years and other factors when calculating dates. The TRUNC () function can be used in a variety of ways, such as calculating dates or removing decimal places from numbers. It is an important tool for Excel analysts to understand and use correctly.