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Holidays optimizer
Define a period
AI Assistant
Assistant: Hello! I handle your requests in natural language, such as:

“Analyze the period from November 1, 2025, to April 25, 2028.”
or
“Add 100 business days to February 25, 2026.”
or
“Next Thursday at 2:12 PM + 124 working hours”
or
“I won't be working first week of next may (going to Greece)”
Assistant: I understand all languages.
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Make
every
day
count
..in Poland
| National public holidays

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Today, Saturday, 6 December, 2025

Working day :
Week : / 52
Day of the year : /
Working day of the year : /
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Denmark
Norway
Finland
Turkey
Portugal
Brasil
Greece
Luxembourg
Australia
Working days world map
Deutschland
Slovenia
Slovakia
Estonia
Croatia
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France
Belarus
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The Holidays        ptimizer
It tells you when to take your days off to maximize the length of your vacation
I would like to take
days off
from  
 to 
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 ()
January 2008
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
01
01
15
0
0
Nowy Rok
+
×
02
15
1
0
+
×
03
15
2
0
+
×
04
15
3
0
+
×
05
15
4
0
+
×
06
15
5
0
Święto Trzech Króli
+
×
02
07
15
6
0
+
×
08
15
7
0
+
×
09
15
8
0
+
×
10
15
9
0
+
×
11
15
10
0
+
×
12
15
11
0
+
×
13
15
12
0
+
×
03
14
15
13
0
+
×
15
15
14
0
+
×
16
15
15
0
+
×
17
15
16
0
+
×
18
15
17
0
+
×
19
15
18
0
+
×
20
15
19
0
+
×
04
21
15
20
0
+
×
22
15
21
0
+
×
23
15
22
0
+
×
24
15
23
0
+
×
25
15
24
0
+
×
26
15
25
0
+
×
27
15
26
0
+
×
05
28
15
27
0
+
×
29
15
28
0
+
×
30
15
29
0
+
×
31
15
30
0
+
×
06
February 2008
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
05
01
15
31
0
+
×
02
15
32
0
+
×
03
15
33
0
+
×
06
04
15
34
0
+
×
05
15
35
0
+
×
06
15
36
0
+
×
07
15
37
0
+
×
08
15
38
0
+
×
09
15
39
0
+
×
10
15
40
0
+
×
07
11
15
41
0
+
×
12
15
42
0
+
×
13
15
43
0
+
×
14
15
44
0
+
×
15
15
45
0
+
×
16
15
46
0
+
×
17
15
47
0
+
×
08
18
15
48
0
+
×
19
15
49
0
+
×
20
15
50
0
+
×
21
15
51
0
+
×
22
15
52
0
+
×
23
15
53
0
+
×
24
15
54
0
+
×
09
25
15
55
0
+
×
26
15
56
0
+
×
27
15
57
0
+
×
28
15
58
0
+
×
29
15
59
0
+
×
10
March 2008
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
09
01
15
60
0
+
×
02
15
61
0
+
×
10
03
15
62
0
+
×
04
15
63
0
+
×
05
15
64
0
+
×
06
15
65
0
+
×
07
15
66
0
+
×
08
15
67
0
+
×
09
15
68
0
+
×
11
10
15
69
0
+
×
11
15
70
0
+
×
12
15
71
0
+
×
13
15
72
0
+
×
14
15
73
0
+
×
15
15
74
0
+
×
16
15
75
0
+
×
12
17
15
76
0
+
×
18
15
77
0
+
×
19
15
78
0
+
×
20
15
79
0
+
×
21
15
80
0
+
×
22
15
81
0
+
×
23
15
82
0
Niedziela Wielkanocna
+
×
13
24
15
83
0
Poniedziałek Wielkanocny
+
×
25
15
84
0
+
×
26
15
85
0
+
×
27
15
86
0
+
×
28
15
87
0
+
×
29
15
88
0
+
×
30
15
89
0
+
×
14
31
15
90
0
+
×
April 2008
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
14
01
15
91
0
+
×
02
15
92
0
+
×
03
15
93
0
+
×
04
15
94
0
+
×
05
15
95
0
+
×
06
15
96
0
+
×
15
07
15
97
0
+
×
08
15
98
0
+
×
09
15
99
0
+
×
10
15
100
0
+
×
11
15
101
0
+
×
12
15
102
0
+
×
13
15
103
0
+
×
16
14
15
104
0
+
×
15
15
105
0
+
×
16
15
106
0
+
×
17
15
107
0
+
×
18
15
108
0
+
×
19
15
109
0
+
×
20
15
110
0
+
×
17
21
15
111
0
+
×
22
15
112
0
+
×
23
15
113
0
+
×
24
15
114
0
+
×
25
15
115
0
+
×
26
15
116
0
+
×
27
15
117
0
+
×
18
28
15
118
0
+
×
29
15
119
0
+
×
30
15
120
0
+
×
19
 
May 2008
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
18
01
15
121
0
Święto Pracy
+
×
02
15
122
0
+
×
03
15
123
0
Święto Konstytucji
+
×
04
15
124
0
+
×
19
05
15
125
0
+
×
06
15
126
0
+
×
07
15
127
0
+
×
08
15
128
0
+
×
09
15
129
0
+
×
10
15
130
0
+
×
11
15
131
0
Zielone Świątki
+
×
20
12
15
132
0
+
×
13
15
133
0
+
×
14
15
134
0
+
×
15
15
135
0
+
×
16
15
136
0
+
×
17
15
137
0
+
×
18
15
138
0
+
×
21
19
15
139
0
+
×
20
15
140
0
+
×
21
15
141
0
+
×
22
15
142
0
Boże Ciało
+
×
23
15
143
0
+
×
24
15
144
0
+
×
25
15
145
0
+
×
22
26
15
146
0
+
×
27
15
147
0
+
×
28
15
148
0
+
×
29
15
149
0
+
×
30
15
150
0
+
×
31
15
151
0
+
×
23
June 2008
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
22
01
15
152
0
+
×
23
02
15
153
0
+
×
03
15
154
0
+
×
04
15
155
0
+
×
05
15
156
0
+
×
06
15
157
0
+
×
07
15
158
0
+
×
08
15
159
0
+
×
24
09
15
160
0
+
×
10
15
161
0
+
×
11
15
162
0
+
×
12
15
163
0
+
×
13
15
164
0
+
×
14
15
165
0
+
×
15
15
166
0
+
×
25
16
15
167
0
+
×
17
15
168
0
+
×
18
15
169
0
+
×
19
15
170
0
+
×
20
15
171
0
+
×
21
15
172
0
+
×
22
15
173
0
+
×
26
23
15
174
0
+
×
24
15
175
0
+
×
25
15
176
0
+
×
26
15
177
0
+
×
27
15
178
0
+
×
28
15
179
0
+
×
29
15
180
0
+
×
27
30
15
181
0
+
×
July 2008
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
27
01
15
182
0
+
×
02
15
183
0
+
×
03
15
184
0
+
×
04
15
185
0
+
×
05
15
186
0
+
×
06
15
187
0
+
×
28
07
15
188
0
+
×
08
15
189
0
+
×
09
15
190
0
+
×
10
15
191
0
+
×
11
15
192
0
+
×
12
15
193
0
+
×
13
15
194
0
+
×
29
14
15
195
0
+
×
15
15
196
0
+
×
16
15
197
0
+
×
17
15
198
0
+
×
18
15
199
0
+
×
19
15
200
0
+
×
20
15
201
0
+
×
30
21
15
202
0
+
×
22
15
203
0
+
×
23
15
204
0
+
×
24
15
205
0
+
×
25
15
206
0
+
×
26
15
207
0
+
×
27
15
208
0
+
×
31
28
15
209
0
+
×
29
15
210
0
+
×
30
15
211
0
+
×
31
15
212
0
+
×
32
August 2008
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
31
01
15
213
0
+
×
02
15
214
0
+
×
03
15
215
0
+
×
32
04
15
216
0
+
×
05
15
217
0
+
×
06
15
218
0
+
×
07
15
219
0
+
×
08
15
220
0
+
×
09
15
221
0
+
×
10
15
222
0
+
×
33
11
15
223
0
+
×
12
15
224
0
+
×
13
15
225
0
+
×
14
15
226
0
+
×
15
15
227
0
Wniebowzięcie
+
×
16
15
228
0
+
×
17
15
229
0
+
×
34
18
15
230
0
+
×
19
15
231
0
+
×
20
15
232
0
+
×
21
15
233
0
+
×
22
15
234
0
+
×
23
15
235
0
+
×
24
15
236
0
+
×
35
25
15
237
0
+
×
26
15
238
0
+
×
27
15
239
0
+
×
28
15
240
0
+
×
29
15
241
0
+
×
30
15
242
0
+
×
31
15
243
0
+
×
36
 
September 2008
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
36
01
15
244
0
+
×
02
15
245
0
+
×
03
15
246
0
+
×
04
15
247
0
+
×
05
15
248
0
+
×
06
15
249
0
+
×
07
15
250
0
+
×
37
08
15
251
0
+
×
09
15
252
0
+
×
10
15
253
0
+
×
11
15
254
0
+
×
12
15
255
0
+
×
13
15
256
0
+
×
14
15
257
0
+
×
38
15
15
258
0
+
×
16
15
259
0
+
×
17
15
260
0
+
×
18
15
261
0
+
×
19
15
262
0
+
×
20
15
263
0
+
×
21
15
264
0
+
×
39
22
15
265
0
+
×
23
15
266
0
+
×
24
15
267
0
+
×
25
15
268
0
+
×
26
15
269
0
+
×
27
15
270
0
+
×
28
15
271
0
+
×
40
29
15
272
0
+
×
30
15
273
0
+
×
41
October 2008
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
40
01
15
274
0
+
×
02
15
275
0
+
×
03
15
276
0
+
×
04
15
277
0
+
×
05
15
278
0
+
×
41
06
15
279
0
+
×
07
15
280
0
+
×
08
15
281
0
+
×
09
15
282
0
+
×
10
15
283
0
+
×
11
15
284
0
+
×
12
15
285
0
+
×
42
13
15
286
0
+
×
14
15
287
0
+
×
15
15
288
0
+
×
16
15
289
0
+
×
17
15
290
0
+
×
18
15
291
0
+
×
19
15
292
0
+
×
43
20
15
293
0
+
×
21
15
294
0
+
×
22
15
295
0
+
×
23
15
296
0
+
×
24
15
297
0
+
×
25
15
298
0
+
×
26
15
299
0
+
×
44
27
15
300
0
+
×
28
15
301
0
+
×
29
15
302
0
+
×
30
15
303
0
+
×
31
15
304
0
+
×
45
November 2008
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
44
01
15
305
0
Wszystkich Świętych
+
×
02
15
306
0
+
×
45
03
15
307
0
+
×
04
15
308
0
+
×
05
15
309
0
+
×
06
15
310
0
+
×
07
15
311
0
+
×
08
15
312
0
+
×
09
15
313
0
+
×
46
10
15
314
0
+
×
11
15
315
0
Dzień Niepodległości
+
×
12
15
316
0
+
×
13
15
317
0
+
×
14
15
318
0
+
×
15
15
319
0
+
×
16
15
320
0
+
×
47
17
15
321
0
+
×
18
15
322
0
+
×
19
15
323
0
+
×
20
15
324
0
+
×
21
15
325
0
+
×
22
15
326
0
+
×
23
15
327
0
+
×
48
24
15
328
0
+
×
25
15
329
0
+
×
26
15
330
0
+
×
27
15
331
0
+
×
28
15
332
0
+
×
29
15
333
0
+
×
30
15
334
0
+
×
49
December 2008
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
49
01
15
335
0
+
×
02
15
336
0
+
×
03
15
337
0
+
×
04
15
338
0
+
×
05
15
339
0
+
×
06
15
340
0
+
×
07
15
341
0
+
×
50
08
15
342
0
+
×
09
15
343
0
+
×
10
15
344
0
+
×
11
15
345
0
+
×
12
15
346
0
+
×
13
15
347
0
+
×
14
15
348
0
+
×
51
15
15
349
0
+
×
16
15
350
0
+
×
17
15
351
0
+
×
18
15
352
0
+
×
19
15
353
0
+
×
20
15
354
0
+
×
21
15
355
0
+
×
52
22
15
356
0
+
×
23
15
357
0
+
×
24
15
358
0
Wigilia Bożego Narodzenia
+
×
25
15
359
0
Boże Narodzenie
+
×
26
15
360
0
Drugi dzień Bożego Narodzenia
+
×
27
15
361
0
+
×
28
15
362
0
+
×
01
29
15
363
0
+
×
30
15
364
0
+
×
31
15
365
0
+
×
02
 
January 2009
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
01
01
15
366
0
Nowy Rok
+
×
02
03
04
05
06
Public holidays
Weekend days
Days to take
Vacations
Days to take:
You can now adjust the optimization by clicking on the calendar
Holidays length:
Optimization factor:
?
Copy
×
From to
:
I have to be at work
I know I want to be on vacation
?
I let the optimizer decide