President Joe Biden declaration of Jan. 9 as a National Day of Mourning for late President Jimmy Carter means closures for some financial institutions and government offices. Carter, the 39th president, died Dec. 29 at age 100.

“Over six decades, we had the honor of calling Jimmy Carter a dear friend. But, what’s extraordinary about Jimmy Carter, though, is that millions of people throughout America and the world who never met him thought of him as a dear friend as well,” Biden said in a statement. ” With his compassion and moral clarity, he worked to eradicate disease, forge peace, advance civil rights and human rights, promote free and fair elections, house the homeless, and always advocate for the least among us. He saved, lifted, and changed the lives of people all across the globe.”

Biden ordered flags to be flown at half-staff during the mourning period.

READ MORE: Jimmy Carter’s life ‘brought greater dignity to the presidency,’ says Gov. Kay Ivey

What’s open, what’s closed on Jan. 9?

The New York Stock Exchange and Nasdaq will close that day, according to USA Today. Bond markets will be open but will close early at 2 p.m. Most banks will remain open.

Federal offices and agencies will be closed though employees deemed as “essential” will remain on the job.

U.S. Postal Service is expected to close as well, meaning no mail will be delivered on that day.

An official state funeral for Carter will be held on Jan. 9.

The last national day of mourning was observed in December 2018 to honor the late President George H.W. Bush.