ant-design/ant-design-mobile

Datepicker 1981 年 12 月 只有 一天 ？

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#7028 opened on Feb 27, 2026

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 (2 comments) (0 reactions) (0 assignees)TypeScript (11,238 stars) (2,313 forks)batch import
bughelp wanted

Description

Version of antd-mobile

5.10.4

Operating system and its version

No response

Browser and its version

No response

Sandbox to reproduce

No response

What happened?

Date picker on year 1981/12 only have 1 date

https://github.com/user-attachments/assets/3a52dd88-b786-432c-8826-e7ed1860f020

Relevant log output

Contributor guide

Tech stack
typescriptreact
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.
mostly clear
Prerequisites
Basic knowledge of ReactUnderstanding of DatePicker component
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60
Research direction
Investigate the date generation logic in the DatePicker component, likely in a file like `src/components/date picker/index.tsx`. The bug may be related to locale or timezone handling for December 1981. Check the algorithm that generates days in a month to see why only one day is shown for that specific month. Review any recent changes to date related utilities.