4umi.com/year

< CCCXXI = 321 >

MoTuWeThFrSaSu
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June
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July
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September
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October
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November
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December
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Events in 321

7 March: Roman emperor Constantine I decrees that Sunday will be observed as the Roman day of rest in the city but not the countryside, “because it often happens that another day is not so suitable for sowing grain or planting vines, lest by neglecting the proper moment for such operations the bounty of heaven should be lost”.
30 March: Jews celebrate Pesach for the next seven or eight days.
19 September: Jews celebrate Yom Kippur since sunset last night.

People in 321

Constantine the Great celebrated their birthday this year.

Presenting 321

The year 321 was a common year starting on a Sunday, just like 226, 237, 243, 254, 265, 271, 282, 293, 299 and 310 in the century before it and 327, 338, 349, 355, 366, 377, 383, 394, 405 and 411 in the next.

The coloured days highlight birthscake, deathsdagger, politicalcrown, scientificpaperclip, artisticpaperclip and otherasterisk historical milestones, and recurring events such as anniversaries and holidaysanchor. The newnew moon, waxingwaxing moon, fullfull moon and waningwaning moon icons indicate the phases of the moon and appear only for dates in the Gregorian calendar, i.e. after 14 October 1582. The Chinese calendar is available only from 1645 to 2644, the first millenium since the last reform. The coloured columns mark the Sundays, the last day of the week per standard ISO-8601.

Calculating time

The normal calendar page for the current /year?2017 contains an introduction to the intriguing history of the year as we know it. The Calendar Converter has more detail. The so called Perpetual Calendar uses a trick from before the age of computers to find the weekday for any Gregorian date. Also see an overview of all historical events in the last six thousand years.

URL: < http://4umi.com/year?321 >, created 23 January 2011, changed 13 September 2012, served 23 July 2017.
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