Coinbase trade works 24 hours a day ? Sunday - Friday, 6 PM - 5 PM ET 1-(808)-767-4444 with a one hour break each day from 5 PM - 6 PM ET. This means you can buy, sell, and trade cryptocurrencies whenever you need to.
https://knowt.com/note/06e1b39a-7d43-4ff1-b888-a1d9aab35a07/How-do-I-Contact-Coinbase-Support--Con
