Problematic second

Today, each of us has many possibilities to check the current time. We have smartphones, watches, computers, TVs, refrigerators, ovens, etc. Everyone knows what a year is and what it signifies. We understand time zones and UTC time. Everything seems trivial. However, from the point of view of IT systems, there are many surprises that we can encounter. Unfortunately, this causes us to face problems that occur very rarely.

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