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getTimezoneOffset() returns -8 instead of -480 - Claude Code

Quick fix

Avoid local-time API on Windows; use timestamp differences or toISOString()/getUTC*, and wait for cc-switch to fix it.

Symptom

Section titled “Symptom”
Error output
重置 09-29 11:30 (UTC+0.13333333333333333)
English translation

Reset 09-29 11:30 (UTC+0.13333333333333333)

Cause

Section titled “Cause”

In the usage-query JavaScript sandbox of cc-switch 3.20.4 on Windows, QuickJS embedded by rquickjs-sys 0.8.1 divides the Windows time-zone offset in minutes by 60 again. Therefore, UTC+8 returns `-8` from `getTimezoneOffset()` instead of `-480`; local-time fields also treat 8 hours as 8 minutes.

This affects usage scripts that rely on `getHours()`, `getMinutes()`, local date fields, or local-time formatting. Countdowns that only calculate differences between two timestamps are unaffected. The maintainer has identified the cause and is preparing a fix that injects a time-zone shim into the script runtime.

Fix

Section titled “Fix”

  1. Change reset countdown logic to calculate only timestamp differences and avoid calling local-time API.

  2. When you need to display an absolute time, use `toISOString()` or `getUTC*` to obtain UTC time; these APIs were verified as correct in the reported environment.

  3. Wait for cc-switch to fix the time-zone shim for the Windows usage-script runtime.

Affected Versions

Section titled “Affected Versions”
ToolClaude Code
Version3.20.4（受影响）
PlatformsWindows

Source Issues

Section titled “Source Issues”

This page is distilled from 1 real issues

FAQ

Section titled “FAQ”

(No FAQ yet)

Section titled “Related problems”
No new usage record is createdMost related issues remain unresolved. Upgrade to a cc-switch version containing the #7740 fix for Gemini streaming usage parsing and model attribution.1 issues mergedCodex session import ignores cache_write_input_tokensUpgrade cc-switch or wait for an official fix: Codex session log import misses cache_write_input_tokens, so cache writes are counted as ordinary input and…1 issues mergedUsage statistics fail to record forked child-session usage - CodexNo confirmed fix exists for 3.20.3; wait for cc-switch to fix usage tracking between forked child sessions and the parent rollout.1 issues merged

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