Getting 6th Bottle Majora's Mask

DAY ONE
10 AM on clock: Go to Mayor's Residence. Room on the Right. Talk to Madame Aroma to get Kafei's Mask
2 PM on clock: Go to Stock Pot Inn. Talk to Anju behind the Counter. Say you have a reservation. Get Key. Put on Kafei's Mask. Talk to her again. Agree to meet her at night in the kitchen.
11 PM - 12 PM on clock: Go to kitchen in Stock Pot Inn. Talk to Anju. Recieve letter. Put it in mail box.

DAY TWO
2 PM on clock: Go to Laundry Pool (South West corner of South Clock Town).
3 PM on clock: Watch Mailman Deliver the letter to Kafei
3 PM - 4 PM on clock: Go inside door Kafei came out of. Go up the stairs and talk to Kafei. Agree to keep his secret. Recieve Pendant of Memories. Take Pendant to Anju in Stock Pot Inn.

DAY THREE
1 PM on clock: Go back to the room you talked to Kafei in. Talk to the man (Curiosity Shop Owner). Recieve Keaton Mask and Express Mail to Mama.
6 PM on clock: Go to Milk Bar and give Express Mail to Madame Aroma