Design Date and Time Display

Content & UX Writing · microcopy, internationalization, tables

Updated 2026-07-28

Choose the format from what the user is doing. Relative time is best for recent activity, absolute dates are best for records, and both together are best for anything auditable.
Stop relative time before it stops being useful. "3 minutes ago" is clear, "14 months ago" is not, so switch to a real date after about a week.
Never write a numeric date in an ambiguous order. The same three numbers mean two different days depending on the reader, so include the month as a word wherever space allows.
Show the timezone whenever the exact moment matters. A meeting, a deadline, a log entry, or a scheduled send needs to say which clock it is on.
Say whose timezone it is. "3:00 PM your time" removes the arithmetic that users otherwise do wrong.
Keep the sortable form in dense tables. A fixed-width, year-first format lines up in a column and sorts correctly, while a friendly format does neither.
Give the full value on hover or in the detail view. Relative time is a summary, and users occasionally need the exact timestamp behind it.
Handle the awkward cases deliberately:

Dates are read at a glance and acted on immediately, so an ambiguous one causes a real mistake rather than a moment of confusion.