Proper noun
Year Without a Summer
The year 1816, in which severe climate abnormalities caused average global temperatures to decrease.
Written in 1816 — the " Year Without a Summer ", caused by atmospheric ash from the volcano Mount Tambora erupting in the Dutch East Indies — "Darkness" depicts a world grown dark and cold because the sun has been extinguished. Source: Internet
ISBN 0-691-12237-7 *1816 was the Year Without a Summer in the Northern Hemisphere. Source: Internet