---
id: TASK-2
title: Fix synodic month duration calculation in lunar engine
status: To Do
assignee: []
created_date: '2026-02-15 16:16'
labels: []
dependencies: []
priority: medium
---

## Description

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getSynodicMonth() in src/lib/lunar.ts finds the nearest new moon instead of computing the full ~29.53 day synodic cycle. findPreviousNewMoon/findNextNewMoon need to search across the full cycle boundary, not just find the local illumination minimum.
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