claude-code - ๐Ÿ’ก(How to fix) Fix [BUG] Scheduled task timestamp ignores system locale, always uses 12h format [1 participants]

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anthropics/claude-code#54243โ€ขFetched 2026-04-29 06:32:31
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Error Messages/Logs

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Preflight Checklist

  • I have searched existing issues and this hasn't been reported yet
  • This is a single bug report (please file separate reports for different bugs)
  • I am using the latest version of Claude Code

What's Wrong?

Windows 11, regional format: Polish (Poland), short time: HH:mm Output: Running scheduled task (Apr 28 11:17am) โ€” uses 12h AM/PM format despite system locale set to 24h

What Should Happen?

Running scheduled task (Apr 28 11:17) or respect system time format.

Error Messages/Logs

Steps to Reproduce

Set Windows regional format to Polish (Poland) or any locale using 24h time format (Settings โ†’ Time & Language โ†’ Language & Region โ†’ Regional format) Verify system uses 24h format (taskbar clock shows e.g. 14:30, not 2:30 PM) Run claude and trigger any scheduled task Observe timestamp in output: Running scheduled task (Apr 28 11:17am) โ€” uses 12h AM/PM format instead of system's 24h format

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

No response

Claude Code Version

2.1.119 (Claude Code)

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

No response

extent analysis

TL;DR

The issue can likely be fixed by adjusting the time format in the Claude Code configuration to respect the system's 24-hour format.

Guidance

  • Verify that the system's regional format is correctly set to Polish (Poland) or another locale using the 24-hour time format.
  • Check the Claude Code documentation for any settings or configuration options related to time format, as it may need to be explicitly set to use the 24-hour format.
  • Test the scheduled task with a different locale or time format to see if the issue is specific to the Polish (Poland) locale.
  • Consider reaching out to the Claude Code support team or checking the documentation for any known issues or workarounds related to time format and regional settings.

Example

No code snippet is provided as the issue seems to be related to configuration or settings rather than code.

Notes

The issue is reported as a regression, meaning it worked in a previous version, which suggests that the problem might be related to a change in the Claude Code version 2.1.119. However, without more information about the previous working version, it's difficult to provide a more specific solution.

Recommendation

Apply workaround: Adjust the time format in the Claude Code configuration to respect the system's 24-hour format, as this is likely to resolve the issue until a permanent fix is available.

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claude-code - ๐Ÿ’ก(How to fix) Fix [BUG] Scheduled task timestamp ignores system locale, always uses 12h format [1 participants]