My suggestion would be:
Daily pack timer resets on daily server reset.
Weekly timer resets every sunday (During daily reset).*
Monthly timer resets every 1st of the month (During daily reset).*
* Even if you would claim your pack 1 day before the timer should reset.
Daily pack timer resets on daily server reset.
Weekly timer resets every sunday (During daily reset).*
Monthly timer resets every 1st of the month (During daily reset).*
* Even if you would claim your pack 1 day before the timer should reset.