Last year I paid advanced tax on July 14th. Why did IRS charge me a penalty for late payment when I think July 14th was the due date for the 1st quarter of 2020.

Last year I paid advanced tax on July 14th. Why did IRS charge me a penalty for late payment when I think July 14th was the due date for the 1st quarter of 2020. Due to the pandemic, I thought they had extended the date last year.