January 23rd (1556) was a Monday. It's the 22nd day of the year (23rd in leap years) in the Gregorian calendar. There are 343 days left to the end of the year.
Historical Events for 23rd January, 1556
» The deadliest earthquake in history, the 1556 Shaanxi earthquake called Shaanxi earthquake, hits Shaanxi province, China. The death toll may have been as high as 830,000.