DAY 1: At 6:00 A.M., speak to Kafei while wearing the Couple's Mask, the Keaton Mask, or Kafei's Mask. He will mention that those are his masks and he will tell you how you got them. He will give you a MESSAGE TO THE POSTMAN. Wait until 10:00 A.M. and speak to the Postman while wearing the Postman's Hat. He will tell you how you how you got that mask and he will ask you for the MESSAGE TO THE POSTMAN. Give it to him and he will give you a RAINBOW RUPEE. It is worth one bajillion gajillion rupees. Now at 5:45 A.M., enter the Curiosity Shop and sell the RAINBOW RUPEE to the Curiosity Shop to earn the CARDBOARD BOX! Open it to find a LETTER TO ANJU. At 7:00 P.M., give the letter to Anju. Anju will go to Romani Ranch. Now save the ranch from the aliens. After that talk to Romani to earn ANJU'S MASK! Now talk to Anju while wearing the mask to obtain the EXPRESS MAIL TO THE MAYOR. Warp to Clock Town. It should be Day 2.
DAY 2: You can do one of two things. 1: Show the express mail to the Mayor to earn a BOTTLE OF DR. PEPPER! 2: Show it to the Happy Mask Man to earn the MARIO MASK! While wearing the mask you can wall-kick. Now get to Sakon's Hideout before 9 AM. At 9 AM, Sakon will enter the hideout. Now enter the hideout with Kafei. Sakon will be in the room before the action starts. Talk to Sakon to receive the TRIFORCE MASK! Your power is increased, but not as much as the Fierce Deity's mask. Now leave the hideout and unfreeze the Snowhead area before 6 PM. Win the Goron Races before 6 PM but instead of winning Gold Dust, you'll win a BOTTLE OF PLATINUM DUST! Note that you must have the Gilded Sword for this next part! Get to the Smithy before 6 PM. Give him your Gilded Sword and your Platinum Dust. Head to Romani Ranch and do the MILK BOTTLES WITH CREMIA quest. After you're done, you'll receive another EMPTY BOTTLE, this time filled with CHATEAU ROMANI! Now complete the IKANA GRAVEYARD ON THE SECOND NIGHT quest and then skip to Day 3.
DAY 3: Go back to the Smithy to receive the PALADIN SWORD! This sword is 4x as strong as the Kokiri Sword. It also looks extremely cool! You need to have it for the next part. Head to the Swordsman's School and show it to him to receive the LETTER TO THE OWNER OF THE CURIOSITY SHOP. Head to the Curiosity Shop and give the owner the letter to learn the MELODY OF KONAMI! The song goes like this: UP, UP, DOWN, DOWN, LEFT, RIGHT, LEFT, RIGHT. At 6 PM, play the MELODY OF KONAMI to the OWNER OF THE MILK BAR to receive the UNKNOWN LETTER. Show it to Anju at the Stock Pot Inn to receive the CARNIVAL COMPASS! At 12:00 A.M. the compass will point to the North, which is Snowhead. Hurry to Snowhead and give the CARNIVAL COMPASS to the Baby Goron to receive the LETTER TO THE GUY IN THE OBSERVATORY. Head to the Observatory and show it to the Guy in the Observatory to receive the LETTER TO THE BANKER. Perform the 4th Day Glitch.
DAY 4: Show the letter to the Banker in West Clock Town to receive the RUPEE MASK! Note that it must be Day 4, NOT Night 3, if you want to give the letter to the banker. He won't accept it on Night 3 or anything before that. He will only accept it on Day 4. While wearing the Rupee Mask, collected rupees are worth double of what they normally are! Now play the Song of Time and save your game.