turnaround
US: /ˈtɝnɝˌaʊnd/
UK: /tˈɜːnɐɹˌaʊnd/
Advanced English dictionary
(BrE also turnround) noun [usually sing.]1 the amount of time it takes to unload a ship or plane at the end of one journey and load it again for the next one
2 the amount of time it takes to do a piece of work that you have been given and return it
3 a situation in which sth changes from bad to good: a turnaround in the economy
4 a complete change in sb's opinion, behaviour, etc: They remain suspicious about the government's turnaround on education policy.