Lunar Calendar Converter
Pick a solar date to see its corresponding lunar date (with Can Chi), or convert the other way from lunar to solar. Calculated using Vietnam's time zone.
Lunar date
13/11/2025
- Thursday
- 01/01/2026 solar calendar
- Day
- Ất Hợi
- Month
- Mậu Tý
- Year
- Ất Tỵ
Calculated using the Vietnamese lunar calendar, GMT+7 timezone.
How is the Vietnamese lunar calendar calculated?
The lunar calendar is based on the Moon's cycle and is calculated using the 105°E meridian (GMT+7 time zone) for Vietnam. Because of this, the Vietnamese lunar calendar sometimes differs by one day from the Chinese lunar calendar.
What is Can Chi?
Can Chi is a way of naming years, months, and days using the Heavenly Stems (Giáp, Ất, Bính…) and Earthly Branches (Tý, Sửu, Dần…), repeating in a 60-cycle pattern. For example, the year Giáp Thìn, or the day Bính Tý.
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Frequently Asked Questions — Lunar Calendar Converter
The tool uses an astronomical algorithm calculated for GMT+7, so it matches the lunar calendar commonly used in Vietnam.
Yes, you can select any date to convert in both directions.
If a date falls in a leap lunar month, the tool will clearly mark it with '(leap)' next to the month.