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This is Sony, and it is the new year in Japan.

(fyi)Japan Standard Time(JST) is UTC+9, single zone and no DST. Not sure of absolute time but Tweet is showing "Jan 1, 2024 at 2:19" timestamp on my JST phone.

Sony is a Japanese company but it's also a multinational company consisting of hundreds of companies they aquired over the years all over the globe. It's therefore a relatively small chance is has something to do with Japan specifically.

It likely depends on where the programmer who has the original cert issued was... so quite likely Japan, given the evidence

This is the most likely, yup. The certs are unlikely to have a precise end-of-year expiration. It will be whatever the expiration is for the last certs loaded.

10 years in cinema IoT, here. Features are encrypted by Key Delivery Messages (KDM), and those are per cinema server/projector "marriage". No KDM will be considered valid if the server certs are expired.

This should make 2024 interesting for me.

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