×
From to
:
I have to be at work
I know I want to be on vacation
?
I let the optimizer decide
Week-end days
Working days
Public holidays
EN?country_code=CZ | ES 
Language:


English
Español
Français
Português
Italiano
Deutsch
..in USA
|  Federal holidays
SAT-SUN
Country :
Calendar
School holidays :
Week-end days:
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
SAVE
The Holidays      ptimizer
It tells you when to take your days off to maximize the length of your vacation
 ▶
Optimize it
I would like to take
days off
between
1 2 3 4 5 6 7 9 10 11 12
and
1 2 3 4 5 6 7 9 10 11 12
Before running the optimizer, clicking on the days of the calendar you can define:
the days you must necessarily be at work ()
the days you want to be on holidays for sure ()
November 2020
week
mon
tue
wed
thu
fri
sat
sun
44
45
46
47
48
26
15
0
0
Thanksgiving
+
×
27
15
1
0
+
×
28
15
2
0
+
×
29
15
3
0
+
×
49
30
15
4
0
+
×
December 2020
week
mon
tue
wed
thu
fri
sat
sun
49
01
15
5
0
+
×
02
15
6
0
+
×
03
15
7
0
+
×
04
15
8
0
+
×
05
15
9
0
+
×
06
15
10
0
+
×
50
07
15
11
0
+
×
08
15
12
0
+
×
09
15
13
0
+
×
10
15
14
0
+
×
11
15
15
0
+
×
12
15
16
0
+
×
13
15
17
0
+
×
51
14
15
18
0
+
×
15
15
19
0
+
×
16
15
20
0
+
×
17
15
21
0
+
×
18
15
22
0
+
×
19
15
23
0
+
×
20
15
24
0
+
×
52
21
15
25
0
+
×
22
15
26
0
+
×
23
15
27
0
+
×
24
15
28
0
+
×
25
15
29
0
Christmas
+
×
26
15
30
0
+
×
27
15
31
0
+
×
53
28
15
32
0
+
×
29
15
33
0
+
×
30
15
34
0
+
×
31
15
35
0
+
×
01
January 2021
week
mon
tue
wed
thu
fri
sat
sun
53
01
15
36
0
New Year's Day
+
×
02
15
37
0
+
×
03
15
38
0
+
×
01
04
15
39
0
+
×
05
15
40
0
+
×
06
15
41
0
+
×
07
15
42
0
+
×
08
15
43
0
+
×
09
15
44
0
+
×
10
15
45
0
+
×
02
11
15
46
0
+
×
12
15
47
0
+
×
13
15
48
0
+
×
14
15
49
0
+
×
15
15
50
0
+
×
16
15
51
0
+
×
17
15
52
0
+
×
03
18
15
53
0
Martin Luther King Day
+
×
19
15
54
0
+
×
20
15
55
0
+
×
21
15
56
0
+
×
22
15
57
0
+
×
23
15
58
0
+
×
24
15
59
0
+
×
04
25
15
60
0
+
×
26
15
61
0
+
×
27
15
62
0
+
×
28
15
63
0
+
×
29
15
64
0
+
×
30
15
65
0
+
×
31
15
66
0
+
×
05
February 2021
week
mon
tue
wed
thu
fri
sat
sun
05
01
15
67
0
+
×
02
15
68
0
+
×
03
15
69
0
+
×
04
15
70
0
+
×
05
15
71
0
+
×
06
15
72
0
+
×
07
15
73
0
+
×
06
08
15
74
0
+
×
09
15
75
0
+
×
10
15
76
0
+
×
11
15
77
0
+
×
12
15
78
0
+
×
13
15
79
0
+
×
14
15
80
0
+
×
07
15
15
81
0
President's Day
+
×
16
15
82
0
+
×
17
15
83
0
+
×
18
15
84
0
+
×
19
15
85
0
+
×
20
15
86
0
+
×
21
15
87
0
+
×
08
22
15
88
0
+
×
23
15
89
0
+
×
24
15
90
0
+
×
25
15
91
0
+
×
26
15
92
0
+
×
27
15
93
0
+
×
28
15
94
0
+
×
09
10
 
March 2021
week
mon
tue
wed
thu
fri
sat
sun
09
01
15
95
0
+
×
02
15
96
0
+
×
03
15
97
0
+
×
04
15
98
0
+
×
05
15
99
0
+
×
06
15
100
0
+
×
07
15
101
0
+
×
10
08
15
102
0
+
×
09
15
103
0
+
×
10
15
104
0
+
×
11
15
105
0
+
×
12
15
106
0
+
×
13
15
107
0
+
×
14
15
108
0
+
×
11
15
15
109
0
+
×
16
15
110
0
+
×
17
15
111
0
+
×
18
15
112
0
+
×
19
15
113
0
+
×
20
15
114
0
+
×
21
15
115
0
+
×
12
22
15
116
0
+
×
23
15
117
0
+
×
24
15
118
0
+
×
25
15
119
0
+
×
26
15
120
0
+
×
27
15
121
0
+
×
28
15
122
0
+
×
13
29
15
123
0
+
×
30
15
124
0
+
×
31
15
125
0
+
×
14
April 2021
week
mon
tue
wed
thu
fri
sat
sun
13
01
15
126
0
+
×
02
15
127
0
+
×
03
15
128
0
+
×
04
15
129
0
+
×
14
05
15
130
0
+
×
06
15
131
0
+
×
07
15
132
0
+
×
08
15
133
0
+
×
09
15
134
0
+
×
10
15
135
0
+
×
11
15
136
0
+
×
15
12
15
137
0
+
×
13
15
138
0
+
×
14
15
139
0
+
×
15
15
140
0
+
×
16
15
141
0
+
×
17
15
142
0
+
×
18
15
143
0
+
×
16
19
15
144
0
+
×
20
15
145
0
+
×
21
15
146
0
+
×
22
15
147
0
+
×
23
15
148
0
+
×
24
15
149
0
+
×
25
15
150
0
+
×
17
26
15
151
0
+
×
27
15
152
0
+
×
28
15
153
0
+
×
29
15
154
0
+
×
30
15
155
0
+
×
18
May 2021
week
mon
tue
wed
thu
fri
sat
sun
17
01
15
156
0
+
×
02
15
157
0
+
×
18
03
15
158
0
+
×
04
15
159
0
+
×
05
15
160
0
+
×
06
15
161
0
+
×
07
15
162
0
+
×
08
15
163
0
+
×
09
15
164
0
+
×
19
10
15
165
0
+
×
11
15
166
0
+
×
12
15
167
0
+
×
13
15
168
0
+
×
14
15
169
0
+
×
15
15
170
0
+
×
16
15
171
0
+
×
20
17
15
172
0
+
×
18
15
173
0
+
×
19
15
174
0
+
×
20
15
175
0
+
×
21
15
176
0
+
×
22
15
177
0
+
×
23
15
178
0
+
×
21
24
15
179
0
+
×
25
15
180
0
+
×
26
15
181
0
+
×
27
15
182
0
+
×
28
15
183
0
+
×
29
15
184
0
+
×
30
15
185
0
+
×
22
31
15
186
0
Memorial Day
+
×
June 2021
week
mon
tue
wed
thu
fri
sat
sun
22
01
15
187
0
+
×
02
15
188
0
+
×
03
15
189
0
+
×
04
15
190
0
+
×
05
15
191
0
+
×
06
15
192
0
+
×
23
07
15
193
0
+
×
08
15
194
0
+
×
09
15
195
0
+
×
10
15
196
0
+
×
11
15
197
0
+
×
12
15
198
0
+
×
13
15
199
0
+
×
24
14
15
200
0
+
×
15
15
201
0
+
×
16
15
202
0
+
×
17
15
203
0
+
×
18
15
204
0
+
×
19
15
205
0
+
×
20
15
206
0
+
×
25
21
15
207
0
+
×
22
15
208
0
+
×
23
15
209
0
+
×
24
15
210
0
+
×
25
15
211
0
+
×
26
15
212
0
+
×
27
15
213
0
+
×
26
28
15
214
0
+
×
29
15
215
0
+
×
30
15
216
0
+
×
27
July 2021
week
mon
tue
wed
thu
fri
sat
sun
26
01
15
217
0
+
×
02
15
218
0
+
×
03
15
219
0
+
×
04
15
220
0
Independence Day
+
×
27
05
15
221
0
Independence Day Obs.
+
×
06
15
222
0
+
×
07
15
223
0
+
×
08
15
224
0
+
×
09
15
225
0
+
×
10
15
226
0
+
×
11
15
227
0
+
×
28
12
15
228
0
+
×
13
15
229
0
+
×
14
15
230
0
+
×
15
15
231
0
+
×
16
15
232
0
+
×
17
15
233
0
+
×
18
15
234
0
+
×
29
19
15
235
0
+
×
20
15
236
0
+
×
21
15
237
0
+
×
22
15
238
0
+
×
23
15
239
0
+
×
24
15
240
0
+
×
25
15
241
0
+
×
30
26
15
242
0
+
×
27
15
243
0
+
×
28
15
244
0
+
×
29
15
245
0
+
×
30
15
246
0
+
×
31
15
247
0
+
×
31
August 2021
week
mon
tue
wed
thu
fri
sat
sun
30
01
15
248
0
+
×
31
02
15
249
0
+
×
03
15
250
0
+
×
04
15
251
0
+
×
05
15
252
0
+
×
06
15
253
0
+
×
07
15
254
0
+
×
08
15
255
0
+
×
32
09
15
256
0
+
×
10
15
257
0
+
×
11
15
258
0
+
×
12
15
259
0
+
×
13
15
260
0
+
×
14
15
261
0
+
×
15
15
262
0
+
×
33
16
15
263
0
+
×
17
15
264
0
+
×
18
15
265
0
+
×
19
15
266
0
+
×
20
15
267
0
+
×
21
15
268
0
+
×
22
15
269
0
+
×
34
23
15
270
0
+
×
24
15
271
0
+
×
25
15
272
0
+
×
26
15
273
0
+
×
27
15
274
0
+
×
28
15
275
0
+
×
29
15
276
0
+
×
35
30
15
277
0
+
×
31
15
278
0
+
×
September 2021
week
mon
tue
wed
thu
fri
sat
sun
35
01
15
279
0
+
×
02
15
280
0
+
×
03
15
281
0
+
×
04
15
282
0
+
×
05
15
283
0
+
×
36
06
15
284
0
Labor Day
+
×
07
15
285
0
+
×
08
15
286
0
+
×
09
15
287
0
+
×
10
15
288
0
+
×
11
15
289
0
+
×
12
15
290
0
+
×
37
13
15
291
0
+
×
14
15
292
0
+
×
15
15
293
0
+
×
16
15
294
0
+
×
17
15
295
0
+
×
18
15
296
0
+
×
19
15
297
0
+
×
38
20
15
298
0
+
×
21
15
299
0
+
×
22
15
300
0
+
×
23
15
301
0
+
×
24
15
302
0
+
×
25
15
303
0
+
×
26
15
304
0
+
×
39
27
15
305
0
+
×
28
15
306
0
+
×
29
15
307
0
+
×
30
15
308
0
+
×
40
October 2021
week
mon
tue
wed
thu
fri
sat
sun
39
01
15
309
0
+
×
02
15
310
0
+
×
03
15
311
0
+
×
40
04
15
312
0
+
×
05
15
313
0
+
×
06
15
314
0
+
×
07
15
315
0
+
×
08
15
316
0
+
×
09
15
317
0
+
×
10
15
318
0
+
×
41
11
15
319
0
Columbus Day
+
×
12
15
320
0
+
×
13
15
321
0
+
×
14
15
322
0
+
×
15
15
323
0
+
×
16
15
324
0
+
×
17
15
325
0
+
×
42
18
15
326
0
+
×
19
15
327
0
+
×
20
15
328
0
+
×
21
15
329
0
+
×
22
15
330
0
+
×
23
15
331
0
+
×
24
15
332
0
+
×
43
25
15
333
0
+
×
26
15
334
0
+
×
27
15
335
0
+
×
28
15
336
0
+
×
29
15
337
0
+
×
30
15
338
0
+
×
31
15
339
0
+
×
44
November 2021
week
mon
tue
wed
thu
fri
sat
sun
44
01
15
340
0
+
×
02
15
341
0
+
×
03
15
342
0
+
×
04
15
343
0
+
×
05
15
344
0
+
×
06
15
345
0
+
×
07
15
346
0
+
×
45
08
15
347
0
+
×
09
15
348
0
+
×
10
15
349
0
+
×
11
15
350
0
Veterans Day
+
×
12
15
351
0
+
×
13
15
352
0
+
×
14
15
353
0
+
×
46
15
15
354
0
+
×
16
15
355
0
+
×
17
15
356
0
+
×
18
15
357
0
+
×
19
15
358
0
+
×
20
15
359
0
+
×
21
15
360
0
+
×
47
22
15
361
0
+
×
23
15
362
0
+
×
24
15
363
0
+
×
25
15
364
0
Thanksgiving
+
×
26
15
365
0
+
×
27
15
366
0
+
×
28
15
367
0
+
×
48
49
 
Public holidays
Week-end days
Days to take
Holidays
Days to take:
You can now adjust the optimization by clicking on the calendar
Holidays length:
Optimization factor:
?
Copy
Share your result!
A suggestion ?
A question or an error to report ?

Do not hesitate to reach me at :
contact@workingdays.org