工程开工日期 meaning in English

construction starting date

This project started on april 15
该工程开工日期为
15 " time for completion " means the time for completing the execution of and passing the tests on completion of the works or any section or part thereof as stated in the contract calculated from the commencement date
15竣工时间是指合同规定从工程开工日期算起到工程或其任何部分或区段施工结束并且通过竣工检验的时间。