President Joe Biden has designated January 9 as a national day of mourning to commemorate former President Jimmy Carter, who passed away on December 29 at the age of 100.

On this day, Carter’s state funeral is scheduled to take place at the Washington National Cathedral in Washington, D.C., following days of ceremonies that started in his home state of Georgia.

In line with this declaration, Biden has instructed that flags be flown at half-staff for 30 days post-Carter’s death.

“I encourage everyone feeling this loss to join us in this respectful observance,” Biden expressed in a statement after Carter’s passing.

In previous national mourning days, such as after the deaths of former Presidents George H. W. Bush in 2018 and Gerald Ford in 2006, federal offices and stock exchanges throughout the U.S. paused operations.

Here’s what you should know about what will be available and inaccessible on January 9.

Are post offices closed on January 9? Will mail be delivered?

All U.S. Postal Service locations will be closed on January 9, and there will be no mail delivery that day, as confirmed by the USPS to YSL News on Tuesday.

Are government offices closed on January 9?

Federal government offices will be shut down on January 9 to honor Carter, following an executive order issued by Biden on December 30. Similar to a federal holiday, some federal employees may still need to work if their roles are considered essential.

Additionally, Chief Justice John Roberts has mandated the closure of the Supreme Court building on January 9 in acknowledgment of the national day of mourning for Carter. While there won’t be any sessions that day, the Court is scheduled to hear arguments the following day regarding TikTok’s appeal against a federal law mandating the popular video app to divest from its Chinese parent company by January 19.

Will banks or businesses be closed on January 9?

National days of mourning do not automatically lead to the closure of businesses or banks like federal holidays do, so most banks are expected to remain open on January 9.

It’s recommended to check with your local bank branch for specific details about their operating hours on Thursday.

Is the stock market closed on January 9?

Trading on the New York Stock Exchange will be halted on Thursday, January 9. The Nasdaq has also announced that all U.S. equities and options will not be traded that day.

Bond markets, however, will operate with shortened hours, closing early at 2 p.m. ET, as advised by the Securities Industry and Financial Markets Association.

“Jimmy Carter, rooted in humble beginnings as a farmer and family man, dedicated his life to public service and the defense of our freedom,” stated Lynn Martin, President of NYSE Group, in a press release.

Are national parks open on January 9?

National parks and their visitor services will “generally be open and available” on Thursday; however, the National Park Service administrative offices will be closed. It’s always wise to check the specific website of the park you plan to visit for updates on operations before you go. The NPS provides an overview of closures here.