J
u
m
p
t
o
c
o
n
t
e
n
t
M
a
i
n
m
e
n
u
M
a
i
n
m
e
n
u
m
o
v
e
t
o
s
i
d
e
b
a
r
h
i
d
e
N
a
v
i
g
a
t
i
o
n
●
M
a
i
n
p
a
g
e
●
C
o
n
t
e
n
t
s
●
C
u
r
r
e
n
t
e
v
e
n
t
s
●
R
a
n
d
o
m
a
r
t
i
c
l
e
●
A
b
o
u
t
W
i
k
i
p
e
d
i
a
●
C
o
n
t
a
c
t
u
s
●
D
o
n
a
t
e
C
o
n
t
r
i
b
u
t
e
●
H
e
l
p
●
L
e
a
r
n
t
o
e
d
i
t
●
C
o
m
m
u
n
i
t
y
p
o
r
t
a
l
●
R
e
c
e
n
t
c
h
a
n
g
e
s
●
U
p
l
o
a
d
f
i
l
e
S
e
a
r
c
h
Search
A
p
p
e
a
r
a
n
c
e
●
C
r
e
a
t
e
a
c
c
o
u
n
t
●
L
o
g
i
n
P
e
r
s
o
n
a
l
t
o
o
l
s
●
C
r
e
a
t
e
a
c
c
o
u
n
t
●
L
o
g
i
n
P
a
g
e
s
f
o
r
l
o
g
g
e
d
o
u
t
e
d
i
t
o
r
s
l
e
a
r
n
m
o
r
e
●
C
o
n
t
r
i
b
u
t
i
o
n
s
●
T
a
l
k
W
i
k
i
p
e
d
i
a
:
S
e
l
e
c
t
e
d
a
n
n
i
v
e
r
s
a
r
i
e
s
/
D
e
c
e
m
b
e
r
2
0
7
2
l
a
n
g
u
a
g
e
s
●
A
f
r
i
k
a
a
n
s
●
Æ
n
g
l
i
s
c
●
А
ԥ
с
ш
ә
а
●
ا
ل
ع
ر
ب
ي
ة
●
A
s
t
u
r
i
a
n
u
●
A
z
ə
r
b
a
y
c
a
n
c
a
●
ت
ۆ
ر
ک
ج
ه
●
ব
া
ং
ল
া
●
閩
南
語
/
B
â
n
-
l
â
m
-
g
ú
●
Б
е
л
а
р
у
с
к
а
я
●
Б
ъ
л
г
а
р
с
к
и
●
B
o
s
a
n
s
k
i
●
C
a
t
a
l
à
●
Ч
ӑ
в
а
ш
л
а
●
Č
e
š
t
i
n
a
●
D
a
n
s
k
●
D
e
u
t
s
c
h
●
Ε
λ
λ
η
ν
ι
κ
ά
●
E
s
p
a
ñ
o
l
●
E
u
s
k
a
r
a
●
ف
ا
ر
س
ی
●
F
ø
r
o
y
s
k
t
●
F
r
a
n
ç
a
i
s
●
F
r
y
s
k
●
G
a
e
i
l
g
e
●
G
a
e
l
g
●
G
a
l
e
g
o
●
贛
語
●
한
국
어
●
Հ
ա
յ
ե
ր
ե
ն
●
H
r
v
a
t
s
k
i
●
I
t
a
l
i
a
n
o
●
ע
ב
ר
י
ת
●
К
ъ
а
р
а
ч
а
й
-
м
а
л
к
ъ
а
р
●
ქ
ა
რ
თ
უ
ლ
ი
●
Қ
а
з
а
қ
ш
а
●
L
a
t
v
i
e
š
u
●
L
ë
t
z
e
b
u
e
r
g
e
s
c
h
●
L
i
e
t
u
v
i
ų
●
М
а
к
е
д
о
н
с
к
и
●
م
ا
ز
ِ
ر
و
ن
ی
●
B
a
h
a
s
a
M
e
l
a
y
u
●
閩
東
語
/
M
ì
n
g
-
d
ĕ
̤
n
g
-
n
g
ṳ
̄
●
N
e
d
e
r
l
a
n
d
s
●
Н
о
х
ч
и
й
н
●
N
o
r
s
k
b
o
k
m
å
l
●
O
ʻ
z
b
e
k
c
h
a
/
ў
з
б
е
к
ч
а
●
ਪ
ੰ
ਜ
ਾ
ਬ
ੀ
●
P
o
l
s
k
i
●
P
o
r
t
u
g
u
ê
s
●
R
o
m
â
n
ă
●
Р
у
с
с
к
и
й
●
С
а
х
а
т
ы
л
а
●
S
c
o
t
s
●
S
h
q
i
p
●
S
l
o
v
e
n
š
č
i
n
a
●
S
o
o
m
a
a
l
i
g
a
●
ک
و
ر
د
ی
●
С
р
п
с
к
и
/
s
r
p
s
k
i
●
S
r
p
s
k
o
h
r
v
a
t
s
k
i
/
с
р
п
с
к
о
х
р
в
а
т
с
к
и
●
S
u
o
m
i
●
S
v
e
n
s
k
a
●
த
ம
ி
ழ
்
●
Т
а
т
а
р
ч
а
/
t
a
t
a
r
ç
a
●
ไ
ท
ย
●
T
ü
r
k
ç
e
●
У
к
р
а
ї
н
с
ь
к
а
●
T
i
ế
n
g
V
i
ệ
t
●
W
a
l
o
n
●
文
言
●
粵
語
●
中
文
E
d
i
t
l
i
n
k
s
●
P
r
o
j
e
c
t
p
a
g
e
●
T
a
l
k
E
n
g
l
i
s
h
●
R
e
a
d
●
E
d
i
t
●
V
i
e
w
h
i
s
t
o
r
y
T
o
o
l
s
T
o
o
l
s
m
o
v
e
t
o
s
i
d
e
b
a
r
h
i
d
e
A
c
t
i
o
n
s
●
R
e
a
d
●
E
d
i
t
●
V
i
e
w
h
i
s
t
o
r
y
G
e
n
e
r
a
l
●
W
h
a
t
l
i
n
k
s
h
e
r
e
●
R
e
l
a
t
e
d
c
h
a
n
g
e
s
●
U
p
l
o
a
d
f
i
l
e
●
S
p
e
c
i
a
l
p
a
g
e
s
●
P
e
r
m
a
n
e
n
t
l
i
n
k
●
P
a
g
e
i
n
f
o
r
m
a
t
i
o
n
●
G
e
t
s
h
o
r
t
e
n
e
d
U
R
L
●
D
o
w
n
l
o
a
d
Q
R
c
o
d
e
●
W
i
k
i
d
a
t
a
i
t
e
m
P
r
i
n
t
/
e
x
p
o
r
t
●
D
o
w
n
l
o
a
d
a
s
P
D
F
●
P
r
i
n
t
a
b
l
e
v
e
r
s
i
o
n
P
r
i
n
t
/
e
x
p
o
r
t
A
p
p
e
a
r
a
n
c
e
m
o
v
e
t
o
s
i
d
e
b
a
r
h
i
d
e
F
r
o
m
W
i
k
i
p
e
d
i
a
,
t
h
e
f
r
e
e
e
n
c
y
c
l
o
p
e
d
i
a
<
W
i
k
i
p
e
d
i
a
:
S
e
l
e
c
t
e
d
a
n
n
i
v
e
r
s
a
r
i
e
s
T
h
i
s
i
s
a
n
o
l
d
r
e
v
i
s
i
o
n
o
f
t
h
i
s
p
a
g
e
,
a
s
e
d
i
t
e
d
b
y
W
e
r
n
h
e
r
(
t
a
l
k
|
c
o
n
t
r
i
b
s
)
at
1
0
:
0
5
,
2
0
D
e
c
e
m
b
e
r
2
0
0
5
(
f
m
t
)
.
T
h
e
p
r
e
s
e
n
t
a
d
d
r
e
s
s
(
U
R
L
)
i
s
a
p
e
r
m
a
n
e
n
t
l
i
n
k
t
o
t
h
i
s
r
e
v
i
s
i
o
n
,
w
h
i
c
h
m
a
y
d
i
f
f
e
r
s
i
g
n
i
f
i
c
a
n
t
l
y
f
r
o
m
t
h
e
c
u
r
r
e
n
t
r
e
v
i
s
i
o
n
.
Revision as of 10:05, 20 December 2005 by
Wernher
(
talk
|
contribs
)
(fmt)
(
d
i
f
f
)
←
P
r
e
v
i
o
u
s
r
e
v
i
s
i
o
n
|
L
a
t
e
s
t
r
e
v
i
s
i
o
n
(
d
i
f
f
)
|
N
e
w
e
r
r
e
v
i
s
i
o
n
→
(
d
i
f
f
)
December 20
:
Felix Edmundovich Dzerzhinsky
1803
- As part of the
Louisiana Purchase
,
New Orleans
was transferred from
France
to the
United States
.
1860
-
South Carolina
seceded
from the
United States
, leading to the
American Civil War
.
1917
-
Felix Edmundovich Dzerzhinsky
(pictured)
founded the
Cheka
, the first
Soviet secret police
.
1995
- The
NATO
-led
IFOR
began peacekeeping in
Bosnia and Herzegovina
.
1999
-
Portugal
transferred
sovereignty
of
Macau
to the
People's Republic of China
.
Recent days:
December 19
–
December 18
–
December 17
More anniversaries:
November 30
December 1
December 2
By email
List of days of the year
R
e
t
r
i
e
v
e
d
f
r
o
m
"
https://en.wikipedia.org/w/index.php?title=Wikipedia:Selected_anniversaries/December_20&oldid=32085448
"
H
i
d
d
e
n
c
a
t
e
g
o
r
y
:
●
P
a
g
e
s
w
i
t
h
m
i
s
s
i
n
g
f
i
l
e
s
●
T
h
i
s
p
a
g
e
w
a
s
l
a
s
t
e
d
i
t
e
d
o
n
2
0
D
e
c
e
m
b
e
r
2
0
0
5
,
a
t
1
0
:
0
5
(
U
T
C
)
.
●
T
h
i
s
v
e
r
s
i
o
n
o
f
t
h
e
p
a
g
e
h
a
s
b
e
e
n
r
e
v
i
s
e
d
.
B
e
s
i
d
e
s
n
o
r
m
a
l
e
d
i
t
i
n
g
,
t
h
e
r
e
a
s
o
n
f
o
r
r
e
v
i
s
i
o
n
m
a
y
h
a
v
e
b
e
e
n
t
h
a
t
t
h
i
s
v
e
r
s
i
o
n
c
o
n
t
a
i
n
s
f
a
c
t
u
a
l
i
n
a
c
c
u
r
a
c
i
e
s
,
v
a
n
d
a
l
i
s
m
,
o
r
m
a
t
e
r
i
a
l
n
o
t
c
o
m
p
a
t
i
b
l
e
w
i
t
h
t
h
e
C
r
e
a
t
i
v
e
C
o
m
m
o
n
s
A
t
t
r
i
b
u
t
i
o
n
-
S
h
a
r
e
A
l
i
k
e
L
i
c
e
n
s
e
.
●
P
r
i
v
a
c
y
p
o
l
i
c
y
●
A
b
o
u
t
W
i
k
i
p
e
d
i
a
●
D
i
s
c
l
a
i
m
e
r
s
●
C
o
n
t
a
c
t
W
i
k
i
p
e
d
i
a
●
C
o
d
e
o
f
C
o
n
d
u
c
t
●
D
e
v
e
l
o
p
e
r
s
●
S
t
a
t
i
s
t
i
c
s
●
C
o
o
k
i
e
s
t
a
t
e
m
e
n
t
●
M
o
b
i
l
e
v
i
e
w
