Calendar Alarm (D-DAY)

Calendar Alarm (D-DAY) is a Chrome extension that gives you precise D-Day reminders with date, time, and seconds, delivered through lightweight widgets that stay visible on your browser. Attach notes and photos to alarms, and organize moments you don’t want to miss.

Key features include flexible alarms with repeats and custom snooze (with gradual volume), auto-screen behavior, content & media support, and calendar integration (Google Calendar) with time zone handling. The widgets are highly configurable—size, colors, fonts, borders, and images—while recurring reminders and power-saving options keep you productive without draining your device.