Smart Calendar & Global Holidays

View a yearly calendar with public holidays from multiple countries and ISO week numbers. Calculate business days and export dates as an .ics file.

Full Year Minimalist Grid & ISO Week Numbers

Enjoy an uncluttered, high-productivity full year calendar view inspired by Time.is. Each week features standard ISO 8601 week numbers (W1 to W52/53) vital for enterprise roadmaps and sprint planning. Today is highlighted with an accent ring, and clicking any date displays the day-of-year, remaining days, and instant D-Day count.

25-Country Holiday Multi-Select Overlay

Holidays default to your active language locale (e.g. US for English, KR for Korean, JP for Japanese). Open the Country Selector to overlay statutory holidays from 25 major countries including the US, UK, Japan, Germany, China, and Australia. Multiple countries render side-by-side with national flags and color-coded badges.

Official Observed / Substitute Holidays

Includes rigorous statutory observance rules (such as US Federal holidays observed on Monday/Friday when falling on weekends, and South Korea's Presidential Decree substitute holidays for national holidays and lunar festivals).

Net Business Working Days & D-Day Toolkit

Calculate true working business days between two dates by automatically excluding weekends and selected statutory holidays. Perfect for cross-border logistics, financial settlements, SLA deadlines, and contract milestones.

.ics Calendar Export & Clean A4 Print

Export all selected public holidays as a standard RFC 5545 .ics file to import directly into Google Calendar, Apple Calendar, or Outlook in one click. Use the Print button to print a crisp A4 paper calendar with clutter-free @media print styles.