Karva chauth

At Karva chauth i have small problem and i have a question.

From when i start my fast until the night,i'm waiting to about 23:00 in night but still no moon.

how long should i wait if the moon don't come to Sweden.

I know the moon must be very busy in India and in the rest of the world.

But it forgets sweden and small me every year.

I wait for about 23 hours without food and water.No problem.

But i like some one to tell me how long i scould wait untill i can start to eat if the moon dont come to Sweden this year also.

Thanks in advance