the official opening hours are different.

1. In the catering industry, TC usually refers to the normal business hours of merchants, TC, that is, business hours. Refers to the time period when a merchant officially opens for business, which usually includes the preparation time in the morning and the closing time in the evening;

2. In the catering industry, UTC usually refers to the opening hours of restaurants, that is, the time when merchants begin to accept customers' reservations or orders. Different from TC, UTC is usually earlier than TC so that customers have enough time to arrive at restaurants.