Inauguration Day

American  

noun

1. the day on which the president of the United States is inaugurated, being January 20 of every year following a year whose number is divisible by four. Prior to the Twentieth Amendment to the Constitution (ratified February 6, 1933), it was March 4.

---

Inauguration Day British  

noun

1. the day on which the inauguration of a president of the US takes place, Jan 20

---

Example Sentences

American investors were humming “Hail to the Chief” last January, with stocks up in the weeks before Inauguration Day.

From The Wall Street Journal

Yet U.S. equities staged a remarkable comeback following a massive dip in April, with the S&P 500 index up 16% since Inauguration Day.

From MarketWatch

Kellogg had also shrugged off an appeal from television personality Tucker Carlson, who told him before Inauguration Day that Moscow was ready to start talking.

From The Wall Street Journal

At midday Wednesday, bitcoin has recovered by about 2.8%, but it is still appreciably lower than its price on Jan. 1 or on Inauguration Day.

From Los Angeles Times

As he has been doing since Inauguration Day.

From Los Angeles Times