DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.
Timestamps show lowercase am/pm again on newer systems.
What's wrong with this entry?
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What
Recent system libraries emit a narrow no-break space (U+202F) before AM/PM rather than an ordinary space, which left some timestamps showing uppercase "AM"/"PM". Three formatters now accept either character, and one of them also gained the case-insensitive matching it was missing.
Evidence
/[ \u202f]([AP]M)/i
Strings lifted out of the shipped bundle, so the claim above can be checked against them.