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TZDB

2 articles · Page 1 of 1

Dec 30, 2021 · Backend Development

Why Does Java Print 1900‑01‑01 08:05:43? Uncovering Hidden Timezone Bugs

A Java program that formats "1900-01-01 08:00:00" unexpectedly prints "1900-01-01 08:05:43" due to historic Shanghai timezone offsets, and the article walks through the bug, related OpenJDK issues, Stack Overflow cases, and how different TZDB releases affect the result.

JDK bugJavaTZDB

0 likes · 9 min read

Why Does Java Print 1900‑01‑01 08:05:43? Uncovering Hidden Timezone Bugs

Su San Talks Tech

Dec 1, 2021 · Backend Development

Why Java’s SimpleDateFormat Adds 5 min 43 sec? Uncovering Hidden Timezone History

An intriguing Java date‑parsing bug shows a 5 minute 43 second offset when formatting the year 1900, caused by historic Shanghai timezone offsets and changes in the TZDB; the article walks through code examples, bug reports, and the evolution of timezone data that explain this anomaly.

JDK bugSimpleDateFormatTZDB

0 likes · 9 min read

Why Java’s SimpleDateFormat Adds 5 min 43 sec? Uncovering Hidden Timezone History

TZDB

Why Does Java Print 1900‑01‑01 08:05:43? Uncovering Hidden Timezone Bugs

Why Java’s SimpleDateFormat Adds 5 min 43 sec? Uncovering Hidden Timezone History

Why Java’s SimpleDateFormat Adds 5 min 43 sec? Uncovering Hidden Timezone History