A chronometer off by one second gives an approximate error of 0.25 nautical miles at the equator. Meanwhile the general precision of celestial navigation is 1-5 nautical miles. If you need high level accurate positioning, celestial navigation is already not an option.

In the open seas, celestial navigation is more than accurate enough. Once you are closer to shore, where the greater precision is needed, better options exists. Lights, ranges, radar, visual, etc.