Chaos: No vacation. Fischer clock is defined by three parameters:

Time - specifies a time for all game moves in days and hours which is set for each player when the game starts. When a player makes a move, the elapsed time from the last move of the opponent is subtracted from this value. If the time drops to a zero, the player loses by a timeout.

Bonus - the number of days and hours which is added to the player's time left value each time he makes a move.

Limit - the maximum time left value for this game which cannot be exceeded using the Bonus feature.

so 36hr / 24hr/ 3days means
- you have 36 hours to move.
- every time you move, 24 hours is added to your current clock time
- a maximum of 3 days can be built up on you clock, which gives you 3 days to move.