Common Time Formatting Mistakes in Go

Go time formatting errors usually stem from using the wrong reference time string in time.Parse or time.Format. Go requires the specific reference time Mon Jan 2 15:04:05 MST 2006 (which equals Unix time 1323456789) to define your layout, rather than standard format codes like YYYY-MM-DD. Replace your custom layout string with the correct reference pattern matching your desired output.

import "time"

// Correct: Use the reference time pattern, not YYYY-MM-DD
layout := "2006-01-02 15:04:05"
t, err := time.Parse(layout, "2023-10-27 14:30:00")
if err != nil {
    panic(err)
}

// Formatting works the same way
formatted := t.Format(layout)

Go uses a unique 'reference time' (Mon Jan 2 15:04:05 MST 2006) to define date formats instead of standard codes like %Y or %m. You must match the position of each number in this specific date to your desired format. Think of it as a template where you replace the numbers with your own placeholders to tell Go how to read or write dates.