Today's Arabic letter is "ghayn" غ
ghayn is the 19th letter in the Arabic Script.
Her English language equivalent a rolling "R" sound pronounced from the back of the throat. Practice by rolling your "R" off the tip of your toungue and gradually move it backwards.
"ayn" ع was yesterday's letter.
"ghayn" غ is today's letter.
"faa" ف is tomorrow's letter.