Customize, preview, and print high-quality calendars. Offers standard grids, yearly overviews, and vertical family planners optimized for A4 & Letter sizes.
Calculate total days, working days, and weekends between two dates.
Compute business working days and hours between dates.
Create a custom countdown timer for holidays or events.
Check if any year is a leap year and view mathematical rules.
Convert Gregorian dates to Julian day numbers.