180 Day Calculation Question

[jimm]

If I stay in Schengen for less than 90 days, leave Schengen just before my 180 days deadline is reached and then re-enter right after the 180 days can I then stay for another 90 days?

Let's say I enter January 1 and stay 60 days. I reenter May 15 and leave before 30 days. I have now stayed in Shenzen for less than 90 days in 180 days period.
Do I have to wait 180 days to reenter to start the clock again.
Or can I return to Schenzen say in July (a few weeks after the 180 day expiration) and stay for 90 days resetting the clock for another 180 days?

Thanks!

[steven]

The short answer is no. See this thread for a sample calculation, hope that helps you to understand how the rule works:

Schengen 90/180 rule calculation
http://www.maxi-pedia.com/forum/index.php?topic=562.msg1838#msg1838

Here you can see how the 90/180 rule is defined in the visa code:

90/180 rule in Schengen Acquis
http://www.maxi-pedia.com/forum/index.php?topic=1092.msg2847;topicseen#msg2847