nisaba
That depends entirely on how you draw cards. I just peel one from the top.
Playing cards are also excellent - far better than Tarot decks you actually like or have used for readings - but be careful about Court Cards: the Jack is 11, the Queen is 12 and the King is 13. The only problem is that if the timing REALLY is completely dependent on your completing other important stuff first: say, for example - you're never going to meet the love of your life or land the perfect job until after you front Court on all our traffic offences or even that old rape charge and get that dealt with, then a deck of playing cards won't be able to tell you that, but a Tarot deck will, by presenting you with - say - the "Justice" card.
In short, playing cards do timing well, but not as well as single-purpose unillustrated Tarot decks that are only used for timings.
Have you considered designating a card to indicate "never"? In those instances where it is impossible that an event will occur, that no realistic effort can be made to reach a goal or fulfill a desire, shouldn't there be some way for the Tarot to convey that something asked about will never take place in the querent's present lifetime?
Have you looked t what I say about the Major Arcana? Sometimes the issues these represent are deal-breakers, resulting in practice in a "never" answer.