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.
Whenever he launches into researched history mode, we get the detached, observant eye of a journalist. (And Tolstoy would know how to be that kind of military journalist, since he covered the Anglo-Russian Crimean War in the 1850s before writing War and Peace.)