time has come
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(someone's or something's) time has come
1. A person or animal has reached the end of their life. Don't grieve, son. I've lived a long and fulfilling life, and now my time has come. She was an old dog, Sarah. Her time had come.
2. Some piece of equipment or technology has reached the end of its usefulness or functionality. Well, this old laptop did a great job for me all through high school and college, but I think its time has come now. A: "This damned printer is on the fritz again." B: "Yeah, I told the boss that its time has come, but she doesn't want to shell out the cash for a new one."
someone's time has comeand some creature's time has come
Euph. someone or some creature is about to die. The poor old dog's time has come. My time has come. I'm ready to go.