Calendar
Interactive monthly calendar with week numbers, day info, and quick navigation.
Today
28
February 2026
Saturday
Day of Year
59 / 365
Week
W9
Quarter
Q1
Days Left
306
Go to Date
Year at a Glance
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February
2026
Wk
Mon
Tue
Wed
Thu
Fri
Sat
Sun
W5
W6
W7
W8
W9
W10
Days in Month
28
Leap Year
✗ No
Days in Year
365
Starts On
Sunday
Documentation
How It Works
This calendar is rendered entirely client-side using JavaScript's Date object. It computes the first day of each month, fills the grid with previous and next month overflow days, and calculates ISO week numbers.
Click any date to see detailed info — day of year, week number, quarter, and days remaining. The sidebar "Year at a Glance" lets you jump to any month quickly.
Features
- ✓ Month, year, and today navigation
- ✓ ISO week numbers
- ✓ Today highlight and date selection
- ✓ Day-of-year, quarter, and days-left info
- ✓ Weekend highlighting
- ✓ Year-at-a-glance month picker
Frequently Asked Questions
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