Is it possible to get a countdown in formula field? 

I have a date of birth field, and also an age field. (Year(Now())-Year(${Contacts.Date of Birth})-If(Month(Now())*100+Dayofmonth(Now())>=Month(${Contacts.Date of Birth})*100+Dayofmonth(${Contacts.Date of Birth}),0,1))

is it possible to have a countdown in days based on the current date and dob? 

i had thought date difference and taking the dob field, replacing the year with the Year(Now()) and then comparing that to Now() to give me a number of day's to or past there birthday?