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Closed question time looks like local time but is not

Below a question, the time posted is displayed, and hovering over it shows an exact timestamp:

> ![The time posted below a question, showing as "36 minutes", with the full timestamp showing as hovertext "2024-07-07T20:47:13Z"](https://meta.codidact.com/uploads/zms5cjrlsc5i6k2pqqqerx5wiy02)

Notice that the timestamp is followed by a "Z" to indicate that this time is in the [timezone UTC](https://en.wikipedia.org/wiki/Coordinated_Universal_Time#Time_zones) (which in the UK at this time of year differs from my local timezone due to daylight saving time). This makes immediately clear to me that this is not my local time.

However, when a question is closed, a time is displayed without any indication of its timezone, which might lead someone to assume it is local time:

> ![Closed notice on a question, with the date and time showing without a timezone label, as "Jul 7, 2024 at 21:21"](https://meta.codidact.com/uploads/nf4nxgzbljlz5bqwvqqbn8dkmslh)

Note that this time is also UTC, which is unexpected. I know because I saw this closed question shortly after it was closed, so local time would not be possible.

I would not expect exact timings of question closure to often be important, so I'm mostly raising this for completeness to be fixed at some future point. It might also be worth reviewing other places where times are displayed without a timezone indicator, in case there are others that could be misleading.