I posted my need for a plumber to replace a kitchen faucet at 12:10AM on a Sunday, hoping to get response early Monday morning. At 12:11AM I got a call from Plumbing Boys. Talk about quick response. Though my need was not an emergency, they called in case it was. And though the phone quote went up when onsite because the water lines on the new faucet weren't long enough, the work was done well and they were very friendly and courteous.
(Based on America/Los_Angeles Time)