conduct a time hack(в знач. "синхронизировать, остановив секундную стрелку и запустив её синхронно с другим человеком": The FO must conduct a time hack to ensure that 0859 on his watch is 0859 on the FDC's watch.4uzhoj)
conduct a time hack(остановив секундную стрелку и запустив её синхронно с другим человеком: The FO must conduct a time hack to ensure that 0859 on his watch is 0859 on the FDC's watch.4uzhoj)
hack watch(a hack watch is a mechanical watch where the seconds hand can be stopped for exact setting of time, which is very necessary for synchronizing soldiers (mywatch.ruwatchtime.com4uzhoj)