9 January

9 January (the Ninth of January, January 9th, &c.) is the ninth day of the year under the Gregorian calendar, as first promulgated by Pope Gregory XIII, Bishop of Rome, in 1582 A.D., as well as the earlier Julian calendar, as first promulgated by Julius Caesar in 45 B.C. The date of 9 January is followed by either 356 days or 357 days during leap years, which are calculated differently in Gregorian and Julian calendars; in both calendars, regardless of its leap year status, the date that follows is 10 January and the date that precedes it is 8 January.

Note that for the purposes of the following indices, the Gregorian date trumps the Julian date, unless otherwise indicated.

Events

• 2009: first release of Bitcoin (v. 0.1.0), marking the beginnings of the modern electronic scrip movement.

Deaths

• J. Nelson Jones ‎(1826-1914), Spiritualist and author of Thaumát-Oahspe (1912)