The Macedonian period also included events of momentous religious significance. This momentous event is commemorated in the U.S. annually as Flag Day. His career coincided with Rome's momentous change from a republic to an empire. The 11th century was also momentous for its religious events. He later recalled arriving in Chicago as the single most momentous event in his life. He noted that it was "momentous, moving and thrilling". This has been characterized as the "most momentous ignored decision" in constitutional history. It was an equally momentous season off the field. Earhart returns to her husband on the eve of her last momentous flight. It was part of an era of momentous change in the Soviet Union. Caldera took advantage of momentous developments in the international oil trade. She was associated with the film company during its most momentous years. Then a momentous event stunned the nation on 19 July 1947. At the momentous impact on major navies around the globe. This is the most momentous bankruptcy hearing I've ever sat through.