Little Jimmy visited his four aunties today. Each of them prepared a cake for him and his parents. Auntie Martha made a carrot cake, Auntie Camilla made a sponge, Auntie Becky made a chocolate cake and Auntie Anne made a fudge. Jimmy would like to visit the aunties the next time when aunties all make the same cakes again. Auntie Martha makes a carrot cake every two days, Auntie Camilla makes a sponge every three days, Auntie Becky makes a chocolate cake every four days and Auntie Anne makes a fudge every seven days. What day should he pick?