Good to know before you start: different calculations with dates result in different formats. The format of the result of a calculation with days depends on the type of calculation.

- When you
**add or subtract**days with the**+**or**–**, you**dd/mm/yyyy, hh:mm**. - When you
**divide**the result by one day, it will become a number:**n.000000,**where n is the number of days. - When you use the
**Triggre functions**to add, you get a date without the time:**dd/mm/yyyy**.

## Strip the time from a date

In a flow part, a calculation with dates might result in a date-time value. If you include this in an email, it will look like this: *pay before 09/02/2022 03:22*. This doesn’t look great, so how to fix this? Convert the result to a text. From there on, you can isolate the date and use that in the data flow.

**Combine**the**result**with**nothing**(in With, select Specific value, enter nothing and press Next).

The result is a text in the format dd/mm/yyyy hh:mm. For a date, you only need the first ten characters.**Isolate**the**date**from the**text**: cut the first 10 characters.**Be aware**: the result**is what you cut**(the date), not what you didn’t cut (the time).

## Calculations with Dates

For some calculations you need an assisting data item. The steps below explain how to create an assisting data item.

- Create the
**data item**Year. - Allow
**import**. - Add
**properties**: year (number, no decimals), first day (date), last day (date) and year as text. - Create the
**data item**Month*.* - Allow
**import**. - Add
**properties**: name (text), number (number, no decimals) and number as text. - Create the
**data item** - Allow
**import**. - Add
**properties**: text (text) and number (number, no decimals). - For all three data items: create a
**user flow**to manage the data item,**add**the user flow**to Appearance**and**publish**. **Create an Excel file**with three sheets: year, month- Fill
- Don’t forget to
**add [ID]**to a unique column name. **Import**the**Excel file(s)**using Unique data.

**Put all date calculations in one flow part**

It can be smart to use one flow part for all date conversions: you have all calculations at hand and a user flow needs to call only one flow part.

**Input**

The input is a Date.

**Convert the date to a text**

The first calculation in the Flow part converts this date to a text.

This is the source of most of the calculations “downstream”.

The result will be dd/mm/yyyy, name it Date as a text.

## First day of the month

When you isolate the day, the result will be a text. Using data item Month, find the matching number of the day. Subtract (this number – 1) from the input. This will give you the first day of the month. Add one month, subtract one day and you get the last day of the month.

- Day as a text:
**cut the first 2 characters**of Date as a text to isolate the day. - Day in Date as a number:
**look up****the matching number**in data item Text to number. - Days to subtract from Date:
**define the number of days**that will be**added to the date**: the date minus one, and that as a negative number.

An example: if the day of Date = 12, you must subtract 11 in order to arrive at day 1, the first day of the month. This is the same as adding -11. The function below can only add, that’s why you have to make it a negative number. - First day of month:
**add****this value to date**. This will result in the first day of the month as a date.

## The last day of a month

Add a month to the first day of the month and then add -1 day to it. That will give you the last day of the month as a date.

- First day next month:
- Last day next month:

## Year as a text

When you want to display or email a calculated year, Triggre will show it as a number (y,yyy). This doesn’t look nice. Just convert the number to a text and use the result.

## The name of the month

First isolate the month number as a text. Then look up the month in data item Month. This will provide you with the name of the month.

**Isolate the month:**position 4 and 5. The result is the number of the month as a text.**Look up the month**: look up the month matching the number of the month.

## The current year

You need the data item Year to find the year.

**Look up**the Year in which the**Current date fits**:

## Number of days since a specific date

If you need to know how many days have passed since something happened, you can use this calculation. The result is a number with 6 decimals.

## Remove the decimals from a number

- To
**strip**the decimals from**a number**,**convert**the number**to a text**. **Remove**the**decimal point**and everything to the right of it.

**Number as a text:**

Make sure that you enter nothing in the specific value behind WITH.

**Determine the amount of digits to the left of the decimal point (n)**

There are six decimals behind the decimal point.

This means that if you delete the (1 decimal point + 6 decimals) = **7 most right characters** from the length of the text, you get the number as an integer.

An example:

- The number is 123.123456
- The number as a text becomes: 123.123456
- The length is 10 characters
- n = 10 – 7 = 3
- CUT 123.123456 FROM 1 TO 3 results in 123

The calculation of n:

Isolate the number (the integer):