Julie lives in London. She has three daughters; April, who lives in New York (where the local time is 5 hours behind London), May, who lives in Vancouver (8 hours behind London), and June, who lives in Tokyo (9 hours ahead of London). They all communicate with each other regularly. Last week April received a text message from May that said "call me on Wednesday at 23.30 your time." Unfortunately, the message had been sent to April by mistake and was intended for June.