The Sega Dreamcast's internal clock will reach its limit. Any attempt to add a year to the date will result in the current year being shown as 1950.
Documents authored by Pope Francis from the year 2013 will be made publicly available, following a rule wherein documents stored in the Vatican Secret Archive will only be released to scholars and the public 75 years following their authorship and internment.
October 27 - MercuryoccultsJupiter for the first time since 1708, but very close to the Sun and impossible to view with naked eye.
May–June – Insect Magicicada broods X (17-year) and XIX (13-year) will emerge simultaneously. This will be the first time this will occur since 1868; next time will be in 2310. This event occurs only once in every 221 years.