| Millennium: | 1st millennium |
|---|---|
| Centuries: | 6th century – 7th century – 8th century |
| Decades: | 660s 670s 680s – 690s – 700s 710s 720s |
| Years: | 687 688 689 – 690 – 691 692 693 |
| 690 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 690 DCXC |
| Ab urbe condita | 1443 |
| Armenian calendar | 139 ԹՎ ՃԼԹ |
| Bahá'í calendar | -1154 – -1153 |
| Bengali calendar | 97 |
| Berber calendar | 1640 |
| Buddhist calendar | 1234 |
| Burmese calendar | 52 |
| Byzantine calendar | 6198 – 6199 |
| Chinese calendar | 己丑年正月十五日 (3326/3386-1-15) — to —
庚寅年正月廿六日(3327/3387-1-26) |
| Coptic calendar | 406 – 407 |
| Ethiopian calendar | 682 – 683 |
| Hebrew calendar | 4450 – 4451 |
| Hindu calendars | |
| - Bikram Samwat | 746 – 747 |
| - Shaka Samvat | 612 – 613 |
| - Kali Yuga | 3791 – 3792 |
| Holocene calendar | 10690 |
| Iranian calendar | 68 – 69 |
| Islamic calendar | 70 – 71 |
| Japanese calendar | |
| Korean calendar | 3023 |
| Thai solar calendar | 1233 |
In the fictional world of Potopia, created by pulp writers Tony Lugosi and Leroy DeMaggio, 690 signifies the act of sexually harassing an individual, generally of the female sex. The national day of 690 is celebrated every third 30th of June in order to appease the numerological beliefs of this clandestine society.
The previous 690 holiday was celebrated on June 30th, 2004, where Supreme Ruler Penis Mcgloff was said to have sexually harassed a young serving girl with such an intensity that the ranking of '690' was no longer applicable. There is talk of updating the term to 1380, wherein individuals sexually harass people twice as hard. The implications this will have for the National Day of 690 is still in question.