| |
Name |
|
|
Issues/Designs |
| |
World Health Organization founding |
1948 |
— |
syns. WHO founding, W.H.O. founding |
| |
World Information Society Day |
— |
— |
- World Telecommunications Day syns. World Telecommunication and Information Society Day, World Telecommunication Day, World Telecommunications and Information Society Day, World Telecommunications Day |
| |
World Meteorological Day |
— |
— |
(2) - ... 1964, ... 1965 syns. World Meteorology Day |
| |
World Population Year |
— |
— |
- ... |
| |
World Post Day |
— |
— |
(5) - UPU Day 1972, UPU Day 1976, UPU Day 1982, ... syns. Universal Postal Union Day, UPU Day |
| |
23rd World Scout Jamboree |
2015 |
— |
- ... |
| |
World Scout Meeting 1983 |
1983 |
— |
- ... |
| |
World Scout Meeting 1995 |
1995 |
— |
- ... |
| |
World UPU Day |
— |
— |
- ... 1973 |
| |
Beginning of World War I |
1914 |
— |
- 100th Anniversary of the ... |
| |
World War II end |
1945 |
— |
syns. WW II end, end of World War II, Victory in WWII, Victory in World War II, Victory in the Great Patriotic War, World War II victory |
| |
wreathed hornbill |
— |
— |
syns. Aceros undulatus, Rhyticeros undulatus |
| |
Wright Flyer |
— |
— |
d - Wright Flyer at Kitty Hawk, 12/17/1903 2000 syns. Flyer 1, Flyer 1903, flyer A, Flyer I, Wright Brothers Flyer I 1903, Wright Flyer I, Wright Flyer I, 1903, Wright Flyer No. 1 |
| |
Orville Wright death |
1948 |
— |
- 70th Anniversary of the Death of ... |
| |
Wilbur Wright birth |
1862 |
— |
- 150th Anniversary of the Birth of ... |
| |
wrinkled hornbill |
— |
— |
syns. Aceros corrugatus, julang jambul-hitam |
| |
wulfenite |
— |
— |
d - wulfenite 2014, etc (2) |
| |
Xenomystus nigri |
— |
— |
d - Xenomystus nigri 2001 |
| |
Xerocomus chrysenteron |
— |
— |
d - Xerocomus..ysenteron 2016 |
| |
Xylocopa virginica |
— |
— |
d - Xylocopa virginica 2018 |
| |
Xylopia villosa |
— |
— |
d - Xylopia villosa 1973 |
| |
yacare caiman |
— |
— |
syns. Caiman yacare, Caiman Yacare (Caiman yacare) |
| |
yachting |
— |
— |
d - yachting 1990 |
| |
Year of the Dragon |
— |
— |
(2) - ... 2012, ... 2012 b |
| |
Year of the Monkey |
— |
— |
- ... 2016 |
| |
Year of the Pig |
— |
— |
- ... 2019 |
| |
Year of the Rat |
— |
— |
- ... 2020 |
| |
Year of the Rooster |
— |
— |
(2) - ... 2017, ... 2017 b |
| |
Year of the Snake |
— |
— |
- ... 2013 |
| |
yellow baboon |
— |
— |
syns. Papio cynocephalus |
| |
yellow tang |
— |
— |
syns. yellow surgeonfish, Zebrasoma flavescens |
| |
yellow-billed kingfisher |
— |
— |
syns. Syma torotoro |
| |
yellow-billed oxpecker |
— |
— |
syns. Buphagus africanus |
| |
yellow-collared lovebird |
— |
— |
syns. Agapornis personata, Agapornis personatus, Masked Lovebird |
| |
yellowfin tuna |
— |
— |
syns. kakahi, Thunnus albacares, Thunnus albaceres, tunny-fish, yellow fin tuna |
| |
yoking oxen |
— |
— |
d - yoking oxen 1965 |
| |
President Tito of Yugoslavia |
— |
— |
d - President..ugoslavia 1983 |
| |
Yuri Gagarin |
1934 |
1968 |
Gagarin birth (2) - 80th Anniversary of the Birth of ..., 85th Anniversary of the Birth of ... death - 50th Anniversary of the Death of ... syns. Gagarin, Juri Gagarin, Jurij Gagarin, Jurij A. Gagarin |
| |
Gagarin birth |
1934 |
— |
(2) - 80th Anniversary of the Birth of ..., 85th Anniversary of the Birth of ... |
| |
Yuri Gagarin death |
1968 |
— |
- 50th Anniversary of the Death of ... |
| |
Aleksandr Zaitsev |
— |
— |
d - Irina Rodnina and Aleksandr Zaitsev (fig… 1994 syns. Alexander Gennadiyevich Zaitsev |
| |
Zantedeschia aethiopica |
— |
— |
d - Zantedesc..ethiopica (2000) 2000, etc (2) |
| |
Zantedeschia albomacula |
— |
— |
d - Oxalis purpurea, Zantedesc..lbomacula 2000 |
| |
Zantedeschia albomaculata |
— |
— |
d - Zantedesc..omaculata 2000, etc (2) |
| |
zebra finch |
— |
— |
syns. Poephila guttata, Taeniopygia guttata |
| |
zebra shark |
— |
— |
syns. Stegostoma fasciatum, Stegostoma tigrinum |
| |
Mao Zedong birth |
1893 |
— |
- 125th Anniversary of the Birth of ... syns. Mao Tse-tung birth |
| |
Zelenkoa onusta |
— |
— |
d - Zelenkoa onusta, Eulaema meriana 2016 |
| |
Zenaidura macroura (Audubon) |
— |
— |
d - Zenaidura..(Audubon) 1985 |
| |
Ferdinand Zeppelin opening |
1838 |
— |
(2) - 175th Anniversary of the Birth of ..., 180th Anniversary of the Birth of ... syns. Graf Ferdinand von Zeppelin birth, Count Ferdinand von Zeppelin birth, Ferdinand Graf von Zeppelin birth |
| |
Zeppelin death |
1917 |
— |
- 100th Anniversary of the Death of ... syns. Count Ferdinand von Zeppelin death, Count Ferdinand Graf von Zeppelin death, Ferdinand Graf von Zeppelin death |
| |
Zimbabwe |
— |
— |
d - Euclase from Zimbabwe 2018 |
| |
Zimbabwe's Independence |
1980 |
— |
- 1st Anniversary of ... |
| |
Zootrophion hirtzii |
— |
— |
d - Euglossa mixta, Zootrophion hirtzii 2016 |
| |
Zygaena filipendulae |
— |
— |
d - Zygaena filipendulae 2015 |
