HabitRPG/habitica

Dailies set to repeat monthly on X day of week show as due the day after completion

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#15496 opened on Aug 26, 2025

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 (1 comment) (0 reactions) (0 assignees)JavaScript (10,775 stars) (3,912 forks)batch import
help wantedstatus: issue: needs investigation

Description

When creating a daily set to repeat monthly on 'Day of Week', (e.g. the 5th week on Monday) but the start date occurs before this day (e.g. 2025-08-24, the fourth week on Monday, as there are only four Mondays), the daily will show as due the day after it is marked as completed.

Contributor guide

Tech stack
javascript
Domain
frontend
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
basic understanding of recurring date logic
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60
Research direction
The issue describes a bug where dailies set to repeat monthly on a specific day of the week show as due the day after completion when the start date occurs before that day. Investigate the recurrence calculation code in the client side JavaScript, likely in the daily/day computation module. Check the logic that determines the next due date and verify if there is an off by one error or incorrect handling of the start date offset.