My maternal grandparents were Polish. Wish I could read and speak Polish. Does it say what time? I would say my rosary at the same time here in the states.
I also will pray at home, though I live not far from the border. Actually, huge crowds are expected I'm not a fan of while praying. The map, I provided the link to, shows numbers in circles of thousands of people already signed in to take part, those who come from the depth of the . It gives no information about the local to attend, which is estimated from 2 to 3 times more,let alone chapels on the airports all across the country.
The time will be 7:00 a.m. Oct. 7 in Chicago [CDT]. I too will join in.
Here’s a calculator:
http://timebie.com/timezone/warsawchicago.php