# Weekday Checker

> Alerts when you type a day of the week and date, but they don't appear to match

Canonical page: [https://chrome-stats.com/d/weekday-checker](https://chrome-stats.com/d/weekday-checker)

## Overview

- **ID:** `weekday-checker`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Luke Massa
- **Category:** other
- **Daily users:** 1
- **Version:** 0.1.0
- **Last updated:** 2026-08-11
- **First published:** 2026-08-08
- **Size:** 9.48 KB
- **Data as of:** 2026-09-11
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/weekday-checker/)

## Description

When sending an email, I would often include a sentence like "Tues Jan 21", only to find that Jan 21 was a Wednesday this year. Then I would have to send a follow up email clarifying whether you meant Tuesday the 20th or Wednesday the 21st.

This plugin watches updates to input fields, and if something that looks like a day of week plus date occurs, it looks for the closest one to the current date in the calendar, and makes sure the day lines up with the date. If it doesn't, it uses a simple popup alert.

After it alerts for one date it won't alert for it again unless the phrase is removed from the input box and put back. This allows user to edit it to fix, or to simply accept it because it was intentional.

## Rankings

- #120,533 — Overall
- #146 — week

## Permissions and access

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/weekday-checker)