DAY function

PRO BASIC

The DAY function in Jspreadsheet Formulas Pro provides the specific day of the month for any given date. The output is a numerical value, ranging from 1 to 31, that corresponds to the day in the month. This function is useful for breaking down dates into more specific components, and can be a helpful tool in organizing and analyzing your data. For instance, you can use DAY to find out which day of the month a particular transaction occurred or an event took place.

Documentation

Returns the day of the month as a number (1-31) for a given date.

Syntax

DAY(date)

Parameter	Description
`date`	The date from which to extract the day of the month.

Behavior

The DAY function extracts the day component (1–31) from a valid date value. It is commonly used to isolate the day portion for sorting, filtering, or logic conditions.. The value returned will be an integer ranging from 1 to 31. Here's how it handles different inputs:

Empty cells: If the DAY function is applied to an empty cell, it will return a #VALUE! error, since it expects a date value.
Text: If the input is a text string that can be interpreted as a date (e.g., "2022-04-01"), the DAY function will return the day of the month from the text string. If the text string cannot be interpreted as a date, it will return a #VALUE! error.
Booleans: Boolean values are not valid inputs for the DAY function and will return a #VALUE! error.
Errors: If the input cell or expression results in an error, the DAY function will propagate that error.

Common Errors

Error	Description
#VALUE!	This error is returned if the input can't be interpreted as a valid date. This includes empty cells, boolean values, text strings that don't represent a date, or other non-date values.
#NUM!	This error is returned if the input is a date that is not supported by the Jspreadsheet engine. For example, some spreadsheet engines do not support dates before January 1, 1900, which may cause a #NUM! error.

Best practices

Always make sure that the input for the DAY function is a valid date or a text string that can be interpreted as a date.

Avoid using DAY function with cells that have a possibility of being empty or having non-date values, as this will result in an error. If there are such possibilities, consider using error handling functions like 'IFERROR' to manage errors.

Use the 'DATE' function to construct a date from separate year, month, and day components before applying the DAY function, if necessary.

Usage

A few examples using the DAY function.

DAY(2958465)      // Returns: 31  
DAY("2025-08-07")      // Returns: 7  
DAY("1999-12-01")      // Returns: 1  
DAY(DATE(2023, 11, 15)) // Returns: 15  
DAY("InvalidDate")     // Returns: #VALUE!

Interactive Spreadsheet Demo

<html>
<script src="https://jspreadsheet.com/v11/jspreadsheet.js"></script>
<script src="https://jsuites.net/v5/jsuites.js"></script>
<link rel="stylesheet" href="https://jsuites.net/v5/jsuites.css" type="text/css" />
<link rel="stylesheet" href="https://jspreadsheet.com/v11/jspreadsheet.css" type="text/css" />

<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Material+Icons" />
<script src="https://cdn.jsdelivr.net/npm/@jspreadsheet/formula-pro/dist/index.min.js"></script>

<div id="spreadsheet"></div>

<script>
// Set your JSS license key (The following key only works for one day)
jspreadsheet.setLicense('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');

// Set the extensions
jspreadsheet.setExtensions({ formula });

// Create a new spreadsheet
jspreadsheet(document.getElementById('spreadsheet'), {
  worksheets: [{
    data: [
    [
        "Date",
        "Day of Month"
    ],
    [
        "2024-01-15",
        "=DAY(A2)"
    ],
    [
        "2024-06-30",
        "=DAY(A3)"
    ],
    [
        "2024-12-07",
        "=DAY(A4)"
    ],
    [
        "2024-02-29",
        "=DAY(A5)"
    ]
]
  }]
});
</script>
</html>

import React, { useRef } from "react";
import { Spreadsheet, Worksheet, jspreadsheet } from "@jspreadsheet/react";
import formula from "@jspreadsheet/formula-pro";
import "jsuites/dist/jsuites.css";
import "jspreadsheet/dist/jspreadsheet.css";

// Set license
jspreadsheet.setLicense('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');

// Set the extensions
jspreadsheet.setExtensions({ formula });

export default function App() {
    // Spreadsheet array of worksheets
    const spreadsheet = useRef();

    // Worksheet data
    const data = [
    [
        "Date",
        "Day of Month"
    ],
    [
        "2024-01-15",
        "=DAY(A2)"
    ],
    [
        "2024-06-30",
        "=DAY(A3)"
    ],
    [
        "2024-12-07",
        "=DAY(A4)"
    ],
    [
        "2024-02-29",
        "=DAY(A5)"
    ]
];

    // Render component
    return (
        <Spreadsheet ref={spreadsheet}>
            <Worksheet data={data} />
        </Spreadsheet>
    );
}

<template>
    <Spreadsheet ref="spreadsheet">
        <Worksheet :data="data" />
    </Spreadsheet>
</template>

<script>
import { Spreadsheet, Worksheet, jspreadsheet } from "@jspreadsheet/vue";
import "jsuites/dist/jsuites.css";
import "jspreadsheet/dist/jspreadsheet.css";
import formula from "@jspreadsheet/formula-pro";

// Set license
jspreadsheet.setLicense('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');

// Set the extensions
jspreadsheet.setExtensions({ formula });

export default {
    components: {
        Spreadsheet,
        Worksheet,
    },
    data() {
        // Worksheet data
        const data = [
    [
        "Date",
        "Day of Month"
    ],
    [
        "2024-01-15",
        "=DAY(A2)"
    ],
    [
        "2024-06-30",
        "=DAY(A3)"
    ],
    [
        "2024-12-07",
        "=DAY(A4)"
    ],
    [
        "2024-02-29",
        "=DAY(A5)"
    ]
]

        return {
            data
        };
    }
}
</script>

import { Component, ViewChild, ElementRef } from "@angular/core";
import jspreadsheet from "jspreadsheet";
import * as formula from "@jspreadsheet/formula-pro";

// Set your JSS license key (The following key only works for one day)
jspreadsheet.setLicense('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');

// Set the extensions
jspreadsheet.setExtensions({ formula });

@Component({
    standalone: true,
    selector: "app-root",
    template: `<div #spreadsheet></div>`
})
export class AppComponent {
    @ViewChild("spreadsheet") spreadsheet: ElementRef;
    // Worksheets
    worksheets: jspreadsheet.worksheetInstance[];

    // Create a new data grid
    ngAfterViewInit() {
        // Create spreadsheet
        this.worksheets = jspreadsheet(this.spreadsheet.nativeElement, {
            worksheets: [{
                data: [
    [
        "Date",
        "Day of Month"
    ],
    [
        "2024-01-15",
        "=DAY(A2)"
    ],
    [
        "2024-06-30",
        "=DAY(A3)"
    ],
    [
        "2024-12-07",
        "=DAY(A4)"
    ],
    [
        "2024-02-29",
        "=DAY(A5)"
    ]
]
            }]
        });
    }
}

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