StraightCalendar

StraightCalendar is a versatile Chrome extension providing customizable calendars that feature holidays from numerous countries including the US, Canada, UK, France, Germany, Italy, Japan, Spain, and Portugal, with support for states and provinces. It displays substitute holidays, lunisolar and synodic month calendars, and recognizes major religious and cultural events like Christian, Hebrew, and Islamic holidays.

Users can manage schedules offline on smartphones, exchange schedules within groups securely using AES-128 encryption, and integrate Google Calendar schedules. The calendar supports flexible weekly and monthly views with customizable start days, various schedule registration options (like recurring events), favorite image icons, and color-coded bands for easy classification. Additional features include diary and memo functionality, alarms with snooze, timezone adjustments, and cycle predictions useful for health management. A widget displays daily calendars, making StraightCalendar a comprehensive tool for organizing personal and group schedules worldwide.