My XLSX converter shipped a report full of 45366s — a date is a format, not a value
This story is from 2026-10-08. It is preserved in the archive; the latest stories are on the live feed.
A user converted a quarterly finance workbook through my converter and got a Markdown table where every date column was plain integers: 45366, 45367, 45368. In Excel, the same cells showed 2024-03-15. My first assumption was corruption. It wasn't — the converter had shown the raw truth. XLSX stores…
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- 2026-10-08 03:39 · DEV Community — AI
My XLSX converter shipped a report full of 45366s — a date is a format, not a value