1550

1550 (MDL) was a common year starting on Wednesday of the Julian calendar, the 1550th year of the Common Era (CE) and Anno Domini (AD) designations, the 550th year of the 2nd millennium, the 50th year of the 16th century, and the 1st year of the 1550s decade. As of the start of 1550, the Gregorian calendar was 10 days ahead of the Julian calendar, which was the dominant calendar of the time.

1550 in other calendars

Gregorian calendar	1550 MDL
Ab urbe condita	2303
Armenian calendar	999 ԹՎ ՋՂԹ
Assyrian calendar	6300
Balinese saka calendar	1471–1472
Bengali calendar	957
Berber calendar	2500
English Regnal year	3 Edw. 6 – 4 Edw. 6
Buddhist calendar	2094
Burmese calendar	912
Byzantine calendar	7058–7059
Chinese calendar	己酉年 (Earth Rooster) 4246 or 4186     — to — 庚戌年 (Metal Dog) 4247 or 4187
Coptic calendar	1266–1267
Discordian calendar	2716
Ethiopian calendar	1542–1543
Hebrew calendar	5310–5311
Hindu calendars
- Vikram Samvat	1606–1607
- Shaka Samvat	1471–1472
- Kali Yuga	4650–4651
Holocene calendar	11550
Igbo calendar	550–551
Iranian calendar	928–929
Islamic calendar	956–957
Japanese calendar	Tenbun 19 (天文１９年)
Javanese calendar	1468–1469
Julian calendar	1550 MDL
Korean calendar	3883
Minguo calendar	362 before ROC 民前362年
Nanakshahi calendar	82
Thai solar calendar	2092–2093
Tibetan calendar	ས་མོ་བྱ་ལོ་ (female Earth-Bird) 1676 or 1295 or 523     — to — ལྕགས་ཕོ་ཁྱི་ལོ་ (male Iron-Dog) 1677 or 1296 or 524

Events

• January 6 – Spanish Captain Hernando de Santana founds the city of Valledupar in what is now Colombian territory.
• February 7 – Julius III becomes Pope.
• The first book in Slovenian, Abecedarium, written by Protestant reformer Primoz Trubar, is printed in Tübingen, Germany.
• Nostradamus' first almanac is written.
• Helsinki, the capital of Finland, is founded by Gustav Vasa.