Calendr is a streamlined menu bar calendar application designed for macOS. It provides instant access to your schedule, events, and upcoming tasks without leaving the current workspace. The app supports multiple calendars, allowing users to view appointments from various sources simultaneously in a compact interface. A key feature includes the ability to display multiple time zones directly within the menu bar, formatting output to show local and remote times alongside location markers for global coordination. Calendr also supports URL schemes to programmatically open specific dates via external scripts or links, accepting natural language input such as month names, exact dates, or relative terms like today and tomorrow. For advanced users, the app includes a built-in blacklist editor and terminal-accessible regex filtering to refine map and weather data displays based on location patterns or codes. Built using modern Apple frameworks including MVVM, RxSwift, AppKit, and SwiftUI, the software offers a respons