This came up a little while ago in my alerts:
The point is that if someone quotes you, it gives either a timestamp of x number of minutes ago, or the date.
Note that the timestamp in this alert says my post was quoted "in 6 minutes". Not 6 minutes ago.
How did the forum know that Lexicus was going to quote me a specific number of minutes IN THE FUTURE?

This is a little weird...
The point is that if someone quotes you, it gives either a timestamp of x number of minutes ago, or the date.
Note that the timestamp in this alert says my post was quoted "in 6 minutes". Not 6 minutes ago.
How did the forum know that Lexicus was going to quote me a specific number of minutes IN THE FUTURE?

This is a little weird...