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Lunar-Solar Date Converter (Vietnamese/Chinese Calendar)
x402
Lunar-Solar Date Converter (Vietnamese/Chinese Calendar) is a paid API for AI agents from lunar-api-production-cba9.up.railway.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Converts between Gregorian solar dates and Vietnamese/Chinese lunar calendar dates in both directions, with Can Chi and leap month support
Price / call$0.005
Success—
StatusUnknown
How this service works
Convert between solar (Gregorian) and Vietnamese/Chinese lunar dates, both directions, 1900-2100, with leap month support. Returns Can Chi of the day. Essential for birthday lookup, ancestor worship dates (ngay gio) and traditional holidays.
Output
Returns the corresponding lunar calendar date with month, day, year, Can Chi (heavenly stems and earthly branches), and leap month status for the given solar date — or the Gregorian equivalent for a given lunar date.
Example use cases
Example prompt
“What is the Vietnamese lunar calendar date for March 15, 2025, including the Can Chi for that day? Convert solar to lunar.”
Technical details
Endpoint
GEThttps://lunar-api-production-cba9.up.railway.app/v1/lunar/convertWhen to prefer
Use this endpoint when you need precise bidirectional conversion between Gregorian and Vietnamese/Chinese lunar dates, especially when Can Chi (heavenly stems/earthly branches) is needed, when handling leap lunar months, or when computing traditional Vietnamese dates like ngay gio (death anniversaries) or birthdays in the lunar calendar.
Side effects
- Date out of supported range (1900-2100) returns an error
- Missing required 'date' query parameter returns 400 bad request
- Invalid date format (not YYYY-MM-DD) returns parsing error
- Invalid direction enum value returns validation error
- Leap month flag provided for non-leap lunar month returns error or unexpected result
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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