March 31

Transfer Day

A heritage observance on March 31 commemorating the transfer of the U.S. Virgin Islands from Danish to American rule in 1917.

Yearly Date

March 31

Observed

Internationally

Introduction

On the morning of March 31, 1917, the Danish flag came down over the islands of St. Thomas, St. John, and St. Croix for the last time. In its place rose the Stars and Stripes, and a 250-year chapter of Danish colonial rule ended with a handshake, a check for $25 million in gold, and a ceremony that gave the islands' residents a new nationality they had never voted on.

Transfer Day marks that exchange of sovereignty. It is both a public holiday in the U.S. Virgin Islands and a reminder that the territory's path to self-governance is still unfinished more than a century later.

Transfer Day History

Denmark claimed St. Thomas in 1672 and added St. John in 1718. St. Croix came later, purchased from France in 1733. For two centuries, the Danish West Indies operated as a plantation colony where enslaved Africans produced sugar, cotton, and rum for European markets.

That economy collapsed after Denmark abolished slavery in the colony in 1848. Freed laborers demanded wages the planters could not afford, and competition from sugar beet producers in Europe undercut Caribbean cane sugar. By the late 1800s, the Danish government was subsidizing a colony that could no longer sustain itself.

Decades of Failed Deals

The United States first tried to buy the islands in 1867, when Secretary of State William Seward offered $7.5 million. Danish voters in the islands approved the sale, but the U.S. Senate refused to ratify the treaty. A second attempt in 1902 passed the Danish parliament's lower house but failed in the upper chamber by a single vote.

World War I Forces the Sale

The outbreak of World War I changed the calculus entirely. American military planners feared that if Germany invaded Denmark, it could seize the islands and use them as submarine bases threatening the Panama Canal. The sinking of the Lusitania in 1915 sharpened the urgency.

Negotiations moved quickly after that. Denmark and the United States signed a cession treaty on August 4, 1916. Danish voters approved the sale in a national referendum that December, and ratifications were exchanged on January 17, 1917.

The Transfer Ceremony

On March 31, 1917, the formal transfer took place. The United States paid $25 million in gold and, as part of the agreement, recognized Denmark's sovereignty over Greenland. The islands' roughly 26,000 residents were given "American nationality" but not full U.S. citizenship.

The U.S. Navy governed the territory until 1931, when administration passed to the Department of the Interior. Congress extended citizenship to most residents in 1927. The right to elect their own governor did not arrive until 1970, more than half a century after the flag was raised.

Transfer Day Timeline

1867

First U.S. purchase attempt fails

Secretary of State William Seward negotiated a treaty to buy the islands for $7.5 million, but the U.S. Senate never ratified the deal.

1917

Transfer ceremony takes place

Denmark formally ceded the Danish West Indies to the United States on March 31 for $25 million in gold, and the islands were renamed the U.S. Virgin Islands.

1927

U.S. citizenship granted

Congress extended American citizenship to most Virgin Islanders, replacing the interim 'American nationality' status they had held since the transfer.

1936

Organic Act signed into law

The first Organic Act established a basic governmental framework for the territory, granting limited local legislative authority.

1970

First elected governor takes office

Melvin Evans became the first popularly elected governor of the U.S. Virgin Islands, ending decades of federally appointed leadership.

How to Celebrate Transfer Day

1

Attend a Transfer Day ceremony on the islands

Local governments in St. Thomas, St. John, and St. Croix host annual Transfer Day events including flag ceremonies, reenactments, and public speeches. The U.S. Virgin Islands tourism board publishes event schedules each year.
2

Read the original cession treaty

The full text of the 1916 Convention between the United States and Denmark is available through the Avalon Project at Yale Law School. Reading the treaty's 12 articles shows what the original terms actually said about citizenship, property rights, and religious freedom.
3

Explore the islands' Danish architectural heritage

Buildings like Fort Christian, completed in 1680 and the oldest standing structure in the territory, reflect two and a half centuries of Danish civic planning. Virtual and in-person tours are available through local historical societies.
4

Cook a traditional Virgin Islands dish

Prepare kallaloo, a thick soup of leafy greens, okra, and salted meat that blends African, Danish, and Caribbean culinary traditions. The dish connects directly to the agricultural and cultural history the holiday commemorates.
5

Study the territory's ongoing status debate

The Department of the Interior's Office of Insular Affairs provides background on the territory's political status and constitutional conventions. Understanding where the islands stand today adds depth to what the holiday represents.

Why Transfer Day is Important

A

It documents an unfinished path to self-governance

Virgin Islanders gained citizenship in stages over 15 years, and the right to elect their own governor took until 1970. The territory still lacks voting representation in Congress and full constitutional autonomy, making Transfer Day a live civic question rather than settled history.
B

It records the last major U.S. territorial purchase

The 1917 acquisition was one of the final additions of permanently inhabited territory to the United States. The deal's terms shaped subsequent U.S. policy on territorial governance and citizenship for insular possessions, setting precedents still debated today.
C

It preserves Danish colonial memory in the Caribbean

The Danish West Indies were Denmark's only Caribbean colony, and the transfer ended 250 years of Danish presence in the region. Transfer Day ceremonies maintain a cultural bridge between the islands and Denmark, including periodic visits by Danish officials.