WhatDayIsIt - Date Highlighter & Day Finder

by fajkowsky@gmail.com · Tools

Manifest V3 Free

View in Chrome Web Store Data as of 21 Oct 2026

Instantly see what day any date falls on. Highlights dates on any webpage - hover to see Monday, Tuesday, etc.

Users

0 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#203K

#170K among extensions

Version

1.3

updated 15 Feb 2026

Users

monthly, 10 months

Latest, 21 Oct 2026: 10 usersMove the mouse over the chart for any month

Ratings count

monthly, 10 months

Latest, 21 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About WhatDayIsIt - Date Highlighter & Day Finder

Ever looked at a date and wondered what day of the week it falls on? WhatDayIsIt instantly highlights dates on any webpage and shows you the day with a simple hover. ✨ FEATURES • Automatic date detection - works on any website • Hover tooltip shows day of week (Monday, Tuesday, etc.) • Supports multiple formats: Dec 25, 2024 | 25/12/2024 | 2024-12-25 • Works with English and Polish dates • Customizable highlight color (on/off) • Icon position setting (before/after date) • Works on dynamic content (SPAs) 🔒 PRIVACY • Zero data collection • No analytics or tracking • Works entirely offline • Open source Perfect for planning, scheduling, and quickly checking any date you encounter online.