How do the apprentices timers always end up syncing?

So I’m really confused because every time I log on I’ll for example use one of my apprentices while the other one is on cooldown by a like a few hours or so and then somehow later their cool down end up syncing.

Is it just me that has noticed this or what’s going on?

So I’m really confused because every time I log on I’ll for example use one of my apprentices while the other one is on cooldown by a like a few hours or so and then somehow later their cool down end up syncing.

Is it just me that has noticed this or what’s going on?