The opening hours of Big City Coffee can vary depending on the specific location you are interested in, as different branches may have different schedules. Typically, many Big City Coffee establishments open in the early morning hours, around six or seven am, and close in the evening, often around five or six pm. However, these hours can change based on the day of the week or any special events. For the most accurate and up-to-date information regarding specific opening hours, it is advisable to check the current web page for that particular location. There you may find details regarding hours of operation, as well as any holiday hours that may apply.