Donald Trump's 100th day in office for his second presidency was April 30, 2025. This marked 100 days from his inauguration day on January 20, 2025, when he was sworn in as the 47th president of the United States. On April 30, 2025, he delivered a speech in Michigan to mark the occasion, highlighting his administration's achievements and key focuses during that period.
Additionally, for reference, during his first presidency, the 100th day was also on April 30 but in 2017.