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Holidays optimizer
New version 2026
Define a custom 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, friday, 9 january, 2026

Working day :
Week : / 52
Day of the year : /
Working day of the year : /
Time (Europe/Warsaw) : 02:06

Working days

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Canada
Italia
España
South Africa
New Zealand
Israel
Sweden
Denmark
Norway
Finland
Turkey
Portugal
Brasil
Greece
Luxembourg
Australia
Working days world map
Deutschland
Slovenia
Slovakia
Estonia
Croatia
Serbia
Romania
Bulgaria
Czech Republic
Russia
Ukraine
Turkey
France
Belarus
USA
Schweiz
Netherlands
Belgique
China
...
xxxx
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week-end days :
custom dates :
public holidays :
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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
between
and
How many vacation blocks?   (    or )        
Each vacation should be at least days
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 2000
week
mon
tue
wed
thu
fri
sat
sun
52
01
15
0
0
New Year's Day
+
×
02
15
1
0
+
×
01
03
15
2
0
+
×
04
15
3
0
+
×
05
15
4
0
+
×
06
15
5
0
Epiphany
+
×
07
15
6
0
+
×
08
15
7
0
+
×
09
15
8
0
+
×
02
10
15
9
0
+
×
11
15
10
0
+
×
12
15
11
0
+
×
13
15
12
0
+
×
14
15
13
0
+
×
15
15
14
0
+
×
16
15
15
0
+
×
03
17
15
16
0
+
×
18
15
17
0
+
×
19
15
18
0
+
×
20
15
19
0
+
×
21
15
20
0
+
×
22
15
21
0
+
×
23
15
22
0
+
×
04
24
15
23
0
+
×
25
15
24
0
+
×
26
15
25
0
+
×
27
15
26
0
+
×
28
15
27
0
+
×
29
15
28
0
+
×
30
15
29
0
+
×
05
31
15
30
0
+
×
February 2000
week
mon
tue
wed
thu
fri
sat
sun
05
01
15
31
0
+
×
02
15
32
0
+
×
03
15
33
0
+
×
04
15
34
0
+
×
05
15
35
0
+
×
06
15
36
0
+
×
06
07
15
37
0
+
×
08
15
38
0
+
×
09
15
39
0
+
×
10
15
40
0
+
×
11
15
41
0
+
×
12
15
42
0
+
×
13
15
43
0
+
×
07
14
15
44
0
+
×
15
15
45
0
+
×
16
15
46
0
+
×
17
15
47
0
+
×
18
15
48
0
+
×
19
15
49
0
+
×
20
15
50
0
+
×
08
21
15
51
0
+
×
22
15
52
0
+
×
23
15
53
0
+
×
24
15
54
0
+
×
25
15
55
0
+
×
26
15
56
0
+
×
27
15
57
0
+
×
09
28
15
58
0
+
×
29
15
59
0
+
×
10
March 2000
week
mon
tue
wed
thu
fri
sat
sun
09
01
15
60
0
+
×
02
15
61
0
+
×
03
15
62
0
+
×
04
15
63
0
+
×
05
15
64
0
+
×
10
06
15
65
0
+
×
07
15
66
0
+
×
08
15
67
0
+
×
09
15
68
0
+
×
10
15
69
0
+
×
11
15
70
0
+
×
12
15
71
0
+
×
11
13
15
72
0
+
×
14
15
73
0
+
×
15
15
74
0
+
×
16
15
75
0
+
×
17
15
76
0
+
×
18
15
77
0
+
×
19
15
78
0
+
×
12
20
15
79
0
+
×
21
15
80
0
+
×
22
15
81
0
+
×
23
15
82
0
+
×
24
15
83
0
+
×
25
15
84
0
+
×
26
15
85
0
+
×
13
27
15
86
0
+
×
28
15
87
0
+
×
29
15
88
0
+
×
30
15
89
0
+
×
31
15
90
0
+
×
14
April 2000
week
mon
tue
wed
thu
fri
sat
sun
13
01
15
91
0
+
×
02
15
92
0
+
×
14
03
15
93
0
+
×
04
15
94
0
+
×
05
15
95
0
+
×
06
15
96
0
+
×
07
15
97
0
+
×
08
15
98
0
+
×
09
15
99
0
+
×
15
10
15
100
0
+
×
11
15
101
0
+
×
12
15
102
0
+
×
13
15
103
0
+
×
14
15
104
0
+
×
15
15
105
0
+
×
16
15
106
0
+
×
16
17
15
107
0
+
×
18
15
108
0
+
×
19
15
109
0
+
×
20
15
110
0
+
×
21
15
111
0
+
×
22
15
112
0
+
×
23
15
113
0
Easter Sunday
+
×
17
24
15
114
0
Easter Monday
+
×
25
15
115
0
+
×
26
15
116
0
+
×
27
15
117
0
+
×
28
15
118
0
+
×
29
15
119
0
+
×
30
15
120
0
+
×
18
 
May 2000
week
mon
tue
wed
thu
fri
sat
sun
18
01
15
121
0
Labour Day
+
×
02
15
122
0
+
×
03
15
123
0
Constitution Day
+
×
04
15
124
0
+
×
05
15
125
0
+
×
06
15
126
0
+
×
07
15
127
0
+
×
19
08
15
128
0
+
×
09
15
129
0
+
×
10
15
130
0
+
×
11
15
131
0
+
×
12
15
132
0
+
×
13
15
133
0
+
×
14
15
134
0
+
×
20
15
15
135
0
+
×
16
15
136
0
+
×
17
15
137
0
+
×
18
15
138
0
+
×
19
15
139
0
+
×
20
15
140
0
+
×
21
15
141
0
+
×
21
22
15
142
0
+
×
23
15
143
0
+
×
24
15
144
0
+
×
25
15
145
0
+
×
26
15
146
0
+
×
27
15
147
0
+
×
28
15
148
0
+
×
22
29
15
149
0
+
×
30
15
150
0
+
×
31
15
151
0
+
×
23
June 2000
week
mon
tue
wed
thu
fri
sat
sun
22
01
15
152
0
+
×
02
15
153
0
+
×
03
15
154
0
+
×
04
15
155
0
+
×
23
05
15
156
0
+
×
06
15
157
0
+
×
07
15
158
0
+
×
08
15
159
0
+
×
09
15
160
0
+
×
10
15
161
0
+
×
11
15
162
0
Pentecost Sunday
+
×
24
12
15
163
0
+
×
13
15
164
0
+
×
14
15
165
0
+
×
15
15
166
0
+
×
16
15
167
0
+
×
17
15
168
0
+
×
18
15
169
0
+
×
25
19
15
170
0
+
×
20
15
171
0
+
×
21
15
172
0
+
×
22
15
173
0
Corpus Christi
+
×
23
15
174
0
+
×
24
15
175
0
+
×
25
15
176
0
+
×
26
26
15
177
0
+
×
27
15
178
0
+
×
28
15
179
0
+
×
29
15
180
0
+
×
30
15
181
0
+
×
27
July 2000
week
mon
tue
wed
thu
fri
sat
sun
26
01
15
182
0
+
×
02
15
183
0
+
×
27
03
15
184
0
+
×
04
15
185
0
+
×
05
15
186
0
+
×
06
15
187
0
+
×
07
15
188
0
+
×
08
15
189
0
+
×
09
15
190
0
+
×
28
10
15
191
0
+
×
11
15
192
0
+
×
12
15
193
0
+
×
13
15
194
0
+
×
14
15
195
0
+
×
15
15
196
0
+
×
16
15
197
0
+
×
29
17
15
198
0
+
×
18
15
199
0
+
×
19
15
200
0
+
×
20
15
201
0
+
×
21
15
202
0
+
×
22
15
203
0
+
×
23
15
204
0
+
×
30
24
15
205
0
+
×
25
15
206
0
+
×
26
15
207
0
+
×
27
15
208
0
+
×
28
15
209
0
+
×
29
15
210
0
+
×
30
15
211
0
+
×
31
31
15
212
0
+
×
August 2000
week
mon
tue
wed
thu
fri
sat
sun
31
01
15
213
0
+
×
02
15
214
0
+
×
03
15
215
0
+
×
04
15
216
0
+
×
05
15
217
0
+
×
06
15
218
0
+
×
32
07
15
219
0
+
×
08
15
220
0
+
×
09
15
221
0
+
×
10
15
222
0
+
×
11
15
223
0
+
×
12
15
224
0
+
×
13
15
225
0
+
×
33
14
15
226
0
+
×
15
15
227
0
Assumption
+
×
16
15
228
0
+
×
17
15
229
0
+
×
18
15
230
0
+
×
19
15
231
0
+
×
20
15
232
0
+
×
34
21
15
233
0
+
×
22
15
234
0
+
×
23
15
235
0
+
×
24
15
236
0
+
×
25
15
237
0
+
×
26
15
238
0
+
×
27
15
239
0
+
×
35
28
15
240
0
+
×
29
15
241
0
+
×
30
15
242
0
+
×
31
15
243
0
+
×
36
 
September 2000
week
mon
tue
wed
thu
fri
sat
sun
35
01
15
244
0
+
×
02
15
245
0
+
×
03
15
246
0
+
×
36
04
15
247
0
+
×
05
15
248
0
+
×
06
15
249
0
+
×
07
15
250
0
+
×
08
15
251
0
+
×
09
15
252
0
+
×
10
15
253
0
+
×
37
11
15
254
0
+
×
12
15
255
0
+
×
13
15
256
0
+
×
14
15
257
0
+
×
15
15
258
0
+
×
16
15
259
0
+
×
17
15
260
0
+
×
38
18
15
261
0
+
×
19
15
262
0
+
×
20
15
263
0
+
×
21
15
264
0
+
×
22
15
265
0
+
×
23
15
266
0
+
×
24
15
267
0
+
×
39
25
15
268
0
+
×
26
15
269
0
+
×
27
15
270
0
+
×
28
15
271
0
+
×
29
15
272
0
+
×
30
15
273
0
+
×
40
October 2000
week
mon
tue
wed
thu
fri
sat
sun
39
01
15
274
0
+
×
40
02
15
275
0
+
×
03
15
276
0
+
×
04
15
277
0
+
×
05
15
278
0
+
×
06
15
279
0
+
×
07
15
280
0
+
×
08
15
281
0
+
×
41
09
15
282
0
+
×
10
15
283
0
+
×
11
15
284
0
+
×
12
15
285
0
+
×
13
15
286
0
+
×
14
15
287
0
+
×
15
15
288
0
+
×
42
16
15
289
0
+
×
17
15
290
0
+
×
18
15
291
0
+
×
19
15
292
0
+
×
20
15
293
0
+
×
21
15
294
0
+
×
22
15
295
0
+
×
43
23
15
296
0
+
×
24
15
297
0
+
×
25
15
298
0
+
×
26
15
299
0
+
×
27
15
300
0
+
×
28
15
301
0
+
×
29
15
302
0
+
×
44
30
15
303
0
+
×
31
15
304
0
+
×
November 2000
week
mon
tue
wed
thu
fri
sat
sun
44
01
15
305
0
All Saints' Day
+
×
02
15
306
0
+
×
03
15
307
0
+
×
04
15
308
0
+
×
05
15
309
0
+
×
45
06
15
310
0
+
×
07
15
311
0
+
×
08
15
312
0
+
×
09
15
313
0
+
×
10
15
314
0
+
×
11
15
315
0
Independence Day
+
×
12
15
316
0
+
×
46
13
15
317
0
+
×
14
15
318
0
+
×
15
15
319
0
+
×
16
15
320
0
+
×
17
15
321
0
+
×
18
15
322
0
+
×
19
15
323
0
+
×
47
20
15
324
0
+
×
21
15
325
0
+
×
22
15
326
0
+
×
23
15
327
0
+
×
24
15
328
0
+
×
25
15
329
0
+
×
26
15
330
0
+
×
48
27
15
331
0
+
×
28
15
332
0
+
×
29
15
333
0
+
×
30
15
334
0
+
×
49
December 2000
week
mon
tue
wed
thu
fri
sat
sun
48
01
15
335
0
+
×
02
15
336
0
+
×
03
15
337
0
+
×
49
04
15
338
0
+
×
05
15
339
0
+
×
06
15
340
0
+
×
07
15
341
0
+
×
08
15
342
0
+
×
09
15
343
0
+
×
10
15
344
0
+
×
50
11
15
345
0
+
×
12
15
346
0
+
×
13
15
347
0
+
×
14
15
348
0
+
×
15
15
349
0
+
×
16
15
350
0
+
×
17
15
351
0
+
×
51
18
15
352
0
+
×
19
15
353
0
+
×
20
15
354
0
+
×
21
15
355
0
+
×
22
15
356
0
+
×
23
15
357
0
+
×
24
15
358
0
Christmas Eve
+
×
52
25
15
359
0
Christmas
+
×
26
15
360
0
Boxing Day
+
×
27
15
361
0
+
×
28
15
362
0
+
×
29
15
363
0
+
×
30
15
364
0
+
×
31
15
365
0
+
×
01
 
January 2001
week
mon
tue
wed
thu
fri
sat
sun
01
01
15
366
0
New Year's Day
+
×
02
03
04
05
06
Public holidays
Week-end days
Days to take
Holidays
Days to take:
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Holidays length:
Optimization factor:
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I have to be at work
I know I want to be on vacation
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