Date Difference Calculator
Calculate date differences and add/subtract days
Countdown Timer
Real-time countdown to any target date and time
Business Day Calculator
Calculate required days excluding weekends and holidays
Japanese Era Year Converter
Convert between Japanese era years and Gregorian calendar
Holiday Calendar
View Japanese national holidays with auto-calculated substitute holidays
Printable Calendar Maker
Generate simple calendars that can be printed on A4 paper or saved as PDF.
Summer Homework Planner
Auto-split homework into daily portions by amount and dates. Recalculates by remaining days; print or save the plan.
Rokuyou Calendar
Check Rokuyou (Japanese lucky/unlucky days) for any date
Age & School Year Calculator
Calculate graduation years automatically for resumes
Meeting Time Zone Finder
Find overlapping work hours across multiple time zones
Ambient Sound & Timer
Mix ambient sounds to maximize focus
Other Categories
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