What formula can I use in Google Sheets to achieve this?
December 26, 2018 December 24, 2018
to
December 26, 2018 December 26, 2018 December 24, 2018 December 24, 2018
try like this:
=ARRAYFORMULA(TRANSPOSE(TEXT(TO_DATE(SPLIT(QUERY(REPT( TO_TEXT(INDIRECT("A1:A"&COUNTA(A1:A))&"♠"), 2), , 999^99), "♠")), "mmmm dd, yyyy")))