#OnThisDay in 2008, #MariahCarey overtakes Elvis Presley's record of 17 No. 1 US hits with her 18th ‘Touch My Body’, only The Beatles have more with 20.

#OnThisDay in 2009, "We Are One" concert at the Lincoln Memorial in Washington prior to #BarackObama's inauguration attracts an estimated crowd of 400,000; performers include: #Beyoncé, #JonBonJovi, #GarthBrooks, #MariahCarey, #JoshGroban, #HerbieHancock, #JohnLegend, #PeteSeeger and #BruceSpringsteen, #U2, and #StevieWonder.

#OnThisDay in 2019, #MariahCarey's single "All I Want For Christmas Is You" reaches No. 1, 25 years after release.