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A major part ofPersona 3 Reload’s combat involves climbing the dozens of floors that Tartarus offers. The tower is split into several sections, each with dangerous monsters and useful treasures.
The first time thatP3players end up in Tartarus is in the opening act,on April 4 on the calendar, to be specific. During the Dark Hour, which happens at midnight every night. Before you go up the stairs, you can do a couple of things at the Entrance of Tartarus, likeuse the clock to heal your party. However, being able to use the clock won’t happen until a little later in the game. If you attempt to interact with it on 4/20, your character will mention that the clock isn’t working.

How to Use the Clock At the Tartarus Entrance
Offer it a Special Item
When you eventually reach the first Border Floor in Tartarus, floor 22, the part will not be able to progress for the time being. You’ll have to wait until the path opens. Once this part of the game happens, you should have access to the special clock on the bottom floor.
To activate the clock inPersona 3 Reload, you must offer sevenTwilight Fragments.
It’s worth noting that this special clock will start to appear on some of the floors in Tartarus, offering the same effect as the clock at the entrance.
What Does the Clock Do in Persona 3 Reload?
By offering up the Twilight Fragments to the clock, it will heal the entire party’s HP and SP. Now, this might not be the most efficient way of healing your party, but if you don’t want to waste SP or healing items, this is the way to go.
How to Get Twilight Fragments
You’ll get your first Twilight Fragment as part of the main story, as your character will find a sparking blue item on their bed. Of course, you’ll be able to find more Twilight Fragments all around the overworld, like the school and in public places –just verify to look for shiny blue glowing spots on the floor and then interact with them to collect the item.
You’ll also use the Twilight Fragments to unlockspecial chests in Tartatus, so you’ll need to choose whether to spend the fragments to heal up your squad or obtain special rewards in the dungeon.