VietLunar shows the Vietnamese lunar date on the Chrome toolbar and opens a monthly calendar with both solar (Dương lịch) and lunar (Âm lịch) dates. What you get • Toolbar icon with today’s lunar day number • Monthly calendar: solar date + lunar date in each cell • Click a day for Can Chi, tiết khí, and giờ hoàng đạo • Works offline — no account, no tracking, no website access • English and Vietnamese UI strings Calendar calculations are based on Hồ Ngọc Đức’s âm lịch algorithm. See the source code and report issues in https://github.com/kimkha/vietlunar