If a site has module that directs users to call a phone number to receive service, can the module be programmed to recognize the times the call center is open?

For instance, the call center is only open from 9am-7pm CST. The module recognizes and indicates that the user may or may not call at that specific time. Something like "Call now, we're open for x more hours." Or, "Sorry, we went home. We'll be back tomorrow at 9am CST. Talk to you soon."

I'd like to implement this as a nice way to let the user save time.