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  1. Why do 48 hours sometimes equal 47?
    Because time in Java is not arithmetic — it’s policy.

    This deep dive shows how DST silently breaks billing logic, why Joda-Time modeled time correctly, and how to migrate legacy code safely to java.time using a real Quarkus example.

    the-main-thread.com/p/joda-tim

    #Java #JodaTime #JavaTime #DST #Quarkus #SoftwareArchitecture #EnterpriseJava