unix - How to generate a sequence of dates given starting and ending dates using AWK of BASH scripts?

Question

I have a data set with the following format

The first and second fields denote the dates (M/D/YYYY) of starting and ending of a study.

How one expand the data into the desired output format, taking into account the leap years using AWK or BASH scripts?

Your help is very much appreciated.

Input

  7/2/2009   7/7/2009
  2/28/1996  3/3/1996
  12/30/2001 1/4/2002

Desired Output

  7/7/2009
  7/6/2009
  7/5/2009
  7/4/2009
  7/3/2009
  7/2/2009
  3/3/1996
  3/2/1996
  3/1/1996
  2/29/1996
  2/28/1996
  1/4/2002
  1/3/2002
  1/2/2002
  1/1/2002
  12/31/2001
  12/30/2001

Answer 1

It can be done nicely with bash alone:

for i in `seq 1 5`;
do
  date -d "2017-12-01 $i days" +%Y-%m-%d;
done;

or with pipes:

seq 1 5 | xargs -I {} date -d "2017-12-01 {} days" +%Y-%m-%d