Tag Archives: Apex ISO week year

YYYY vs yyyy in Salesforce Apex: Understanding the Critical Date Formatting Difference

When working with date formatting in Salesforce Apex, developers often rely on formatting patterns to convert dates into readable strings for integrations, reports, or document generation. At first glance, the patterns YYYY and yyyy appear identical. However, they represent two different concepts of a year, and using the wrong one can produce unexpected results. This… Read More »