What year was the last time there were 27 biweekly pay periods?

The last time there were 27 biweekly pay periods in a calendar year was in 2020. This occurs when a company pays employees every two weeks, resulting in an extra pay period every 11 years or so, depending on the payroll schedule and the calendar year. In 2020, the year started on a Wednesday, which contributed to the occurrence of 27 pay periods for some organizations.