Porterville Chamber of Commerce Office Closed In observance of Martin Luther King Jr. Day, our office will be closed on Monday, January 20th. Our business hours will resume Tuesday, January 21st. We apologize for any inconvenience. Porterville Chamber of Commerce Offic... Set a Reminder Enter your email address below to receive a reminder message. Email address Select the amount of Days before the event -- Select Days Before Event -- 1 Day 2 Days 3 Days 1 Week Submit Date and Time Monday Jan 20, 2020 Set a Reminder Enter your email address below to receive a reminder message. Email address Select the amount of Days before the event -- Select Days Before Event -- 1 Day 2 Days 3 Days 1 Week Submit Share × Print Email Add to Calendar Facebook Twitter LinkedIn Tell a Friend × Select Calendar Type × Google Yahoo iCal (Outlook, Apple, or other)