90

Upper Paleolithic
• 10th millennium BC | 9th millennium BC | 8th millennium BC
• 7th millennium BC | 6th millennium BC | 5th millennium BC

..... Click the link for more information.

The 1st century BC started the first day of 100 BC and ended the last day of 1 BC. It is considered part of the Classical era, epoch, or historical period. An alternative name for this century is the last century BC.
..... Click the link for more information.

The 1st century was that century that lasted from 1 to 100 according the Gregorian calendar. It is considered part of the Classical era, epoch, or historical period
..... Click the link for more information.

The 2nd century is the period from 101 to 200 in accordance with the Julian calendar in the Christian Era. It is considered part of the Classical era, epoch, or historical period
..... Click the link for more information.

list of decades which have articles with more information about them.

During the twentieth century, it became popular to look at that century's decades as historical entities in themselves.
..... Click the link for more information.

60S is the large ribosomal subunit in eukaryotes. It corresponds to 50S in prokaryotes.

It consists of the following:

• 5S
• 28S
• 5.8S

---

1st millennium
Centuries: 1st century BC - 1st century - 2nd century
..... Click the link for more information.

Centuries: 1st century BC - 1st century - 2nd century

40s 50s 60s - 70s - 80s 90s 100s
70 71 72 73 74
75 76 77 78 79

- -
-

Note: Sometimes the '70s

..... Click the link for more information.

Centuries: 1st century BC - 1st century - 2nd century

50s 60s 70s - 80s - 90s 100s 110s
80 81 82 83 84
85 86 87 88 89

- -
-

Note: Sometimes '80s

..... Click the link for more information.

Centuries: 1st century BC - 1st century - 2nd century

60s 70s 80s - 90s - 100s 110s 120s
90 91 92 93 94
95 96 97 98 99

- -
-

Note: Sometimes the '90s

..... Click the link for more information.

Centuries: 0th century - 1st century - 2nd century

70s 80s 90s - 100s - 110s 120s 130s
100 101 102 103 104
105 106 107 108 109

- -
-

Events and Trends

..... Click the link for more information.

Centuries: 1st century - 2nd century - 3rd century

80s 90s 100s - 110s - 120s 130s 140s
110 111 112 113 114
115 116 117 118 119

- -
-

Events and Trends

• The Roman Empire reaches its maximum extent.

..... Click the link for more information.

Centuries: 1st century - 2nd century - 3rd century

90s 100s 110s - 120s - 130s 140s 150s
120 121 122 123 124
125 126 127 128 129

- -
-

Events and Trends

Significant people

• Hadrian, Roman Emperor

..... Click the link for more information.

This page indexes the individual years pages.

Twenty-first century

2100 - 2099 - 2098 - 2097 - 2096 - 2095 - 2094 - 2093 - 2092 - 2091

2090 - 2089 - 2088 - 2087 - 2086 - 2085 - 2084 - 2083 - 2082 - 2081

..... Click the link for more information.

1st century BC - 1st century - 2nd century
50s  60s  70s  - 80s -  90s  100s  110s
84  85  86  - 87 -  88  89  90 
..... Click the link for more information.

1st century BC - 1st century - 2nd century
50s  60s  70s  - 80s -  90s  100s  110s
85  86  87  - 88 -  89  90  91 
..... Click the link for more information.

1st century BC - 1st century - 2nd century
50s  60s  70s  - 80s -  90s  100s  110s
86  87  88  - 89 -  90  91  92 
..... Click the link for more information.

1st century BC - 1st century - 2nd century
60s  70s  80s  - 90s -  100s  110s  120s
88  89  90  - 91 -  92  93  94 
..... Click the link for more information.

1st century BC - 1st century - 2nd century
60s  70s  80s  - 90s -  100s  110s  120s
89  90  91  - 92 -  93  94  95 
..... Click the link for more information.

1st century BC - 1st century - 2nd century
60s  70s  80s  - 90s -  100s  110s  120s
90  91  92  - 93 -  94  95  96 
..... Click the link for more information.

90 (ninety) is the natural number preceded by 89 and followed by 91.

In mathematics

90 is the sum of the squares of the integers 2 to 6. Because 90 is the sum of its unitary divisors (excluding itself), it is a unitary perfect number, and because it is equal
..... Click the link for more information.

Kush -
• Teritnide, King of Kush (85-90)
• Teqerideamani I, King of Kush (90-114)

Asia

• China - He, Emperor of China (88-106)
• Korea (Three Kingdoms Period)
• Baekje

..... Click the link for more information.

Gregorian calendar is the most widely used calendar in the world. A modification of the Julian calendar, it was first proposed by the Calabrian doctor Aloysius Lilius, and was decreed by Pope Gregory XIII, for whom it was named, on 24 February 1582 via the papal bull
..... Click the link for more information.

Ab Urbe condita (literally, "from the city, having been founded") is a monumental history of Rome, from its legendary founding (ab Urbe condita, dated to 753 BC by Varro and most modern scholars). The book was written by Titus Livius (around 59 BC–AD 17).
..... Click the link for more information.

Armenian calendar uses the Armenian numerals. It begins in AD 552 as the start of the Armenian era.

Dates are marked by the letters ԹՎ
..... Click the link for more information.

Buddhist calendar is used on mainland Southeast Asia in the countries of Cambodia, Laos, Thailand, Myanmar (formerly Burma) and Sri Lanka in several related forms. It is a lunisolar calendar having months that are alternately 29 and 30 days, with an intercalated day and a 30-day
..... Click the link for more information.

Chinese calendar is a lunisolar calendar, incorporating elements of a lunar calendar with those of a solar calendar. In China today, the Gregorian calendar is used for most day to day activities, but the Chinese calendar is still used for marking traditional Chinese holidays such
..... Click the link for more information.

Intercalation is the insertion of a leap day, week or month into some calendar years to make the calendar follow the seasons or moon phases. Lunisolar calendars may require a combination of both adjustments.
..... Click the link for more information.

The Chinese sexagenary cycle (Chinese: 干支; Pinyin: gānzhī) is a cyclic numeral system of 60 combinations of the two basic cycles, the ten Heavenly Stems (天干;
..... Click the link for more information.

The Chinese sexagenary cycle (Chinese: 干支; Pinyin: gānzhī) is a cyclic numeral system of 60 combinations of the two basic cycles, the ten Heavenly Stems (天干;
..... Click the link for more information.

Coptic calendar, also called the Alexandrian calendar, is used by the Coptic Orthodox Church. This calendar is based on the ancient Egyptian calendar. To avoid the calendar creep of the latter, a reform of the ancient Egyptian calendar was introduced at the time of Ptolemy
..... Click the link for more information.