UTC+13:00 was used as a daylight time (summer in Northern Hemisphere) in the parts of very eastern Russia (Chukotka and Kamchatka) that used Kamchatka Time.
UTC+13 digunakan sebagai waktu musim panas (musim panas di belahan bumi utara) di bagian Rusia paling timur (Chukotka dan Kamchatka) yang dulunya menggunakan Waktu Kamchatka.