I have problem with SLA times settings, I have in my queue set Escalation - Solution Time for 388 800 minutes (270 days), but in ticket view I can show much shorter time, only about 97 days

I tried it on several OTRS instalation - 2.4.7 on openSuse and Ubuntu, 2.4.8 on Ubuntu and Windows.
Can you help me with this problem?
THX, Musso