Supermarkets are open from 8.30 to 13.00 and then from 16.30 to 19.30. Here you can find almost everything that you need.
There are various banks in Cortona. Each has different opening times but normally they are all open in the morning from 8.30 to 13.00. Most are open for 1 hour in the afternoon, but these times vary depending on the bank. Banks are not open on Saturdays.
All the banks have ATM machines that also take credit cards.
Chemists are open everyday from 8.30 to 13.00 and 16.30 to 19.30. On Saturdays and Sundays there will be only one open in the whole town, to find out which one there is a notice board outside all chemists which states which one is open. There is also an emergency phone number, otherwise call 118.