timeFormat
A Claude Code settings key, read out of the shipped bundle. It was in the build from v2.1.257 and was gone by v2.1.284.
Show the times in the interface on a 12-hour or 24-hour clock, in UTC, or with a strftime pattern
Anthropic's own wording. Read off All settings, captured 2026-11-12.
In the changelogs
2Releases whose published page names timeFormat.
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v2.1.257
New 'Time format' setting in /config
A new Time format setting in /config controls whether UI clocks use 12-hour, 24-hour, UTC or a custom pattern.
found in this entry's text, named in this entry
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v2.1.257
New UI clock formatting settings: timeFormat and timeZone
Two new settings.json fields, timeFormat and timeZone, control how times are rendered in the UI.
found in this entry's text, named in this entry
First cited
1The earliest release whose published evidence quoted timeFormat was v2.1.257, 1 Sep 2026. That is the oldest release this project wrote about it, so it is a floor on the name's age and not the release that introduced it. It is not a presence reading: which builds carried the name is the table below.
Presence across releases
2Build by build
59One row per release since the first build this name was read out of. Absent means the build was read and the name was not in it, never mined means no bundle for that release was ever archived, and a declared type or a default is only ever what that release's own bundle stated.
Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the settings key does. All settings keys.