Limitations on tanning. The process of tanning, known as melanogenesis, may take up to 48 hours to start. Therefore, it's recommended that you allow that amount of time to pass between sessions in a tanning bed. Businesses will not allow you to tan for more than 30 minutes in a bed, and less than that for certain beds.
It took Tolstoy six years to write War and Peace, beginning in 1862.
Time flows backward, making a circle. In the end, Tolstoy wrote not a history of yesterday but a history of the day before yesterday. This pattern would play itself out once again in Tolstoyâs work when, in 1856, he started working on a historical novel, the future War and Peace.