if I didn't hit the calculator button incorrectly I think it is 19 days (993,032.16 PED).
Have taken 5% of the original amount and then reduced that new figure by 5% and so until I got nearest figure to your 1,000,000 PED
ie 2,500,000 - 125,000= 2,375,000
2,375,000 - 118,750= 2,256,250...