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Birthdays
Holidays optimizer
New version 2026
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.
Send
Make
every
day
count
..in Guatemala
| Días festivos nacionales

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Today, Wednesday, 7 January, 2026

Working day :
Week : / 52
Day of the year : /
Working day of the year : /
Time (America/Guatemala) : 13:53

Working days

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Ukraine
Israel
Sweden
Denmark
Norway
Finland
Turkey
Netherlands
Belgique
Monaco
Greece
Luxembourg
South Africa
New Zealand
South Korea
México
Colombia
Working days world map
USA
Argentina
Chile
Brasil
Canada
España
Deutschland
Poland
Österreich
United Kingdom & Ireland
Italia
Portugal
France
Australia
India
China
Japan
Schweiz
Russia
...
xxxx
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working days:
weekend 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
from  
 to 
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 2026
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
01
02
07
15
0
0
+
×
08
15
1
0
+
×
09
15
2
0
+
×
10
15
3
0
+
×
11
15
4
0
+
×
03
12
15
5
0
+
×
13
15
6
0
+
×
14
15
7
0
+
×
15
15
8
0
+
×
16
15
9
0
+
×
17
15
10
0
+
×
18
15
11
0
+
×
04
19
15
12
0
+
×
20
15
13
0
+
×
21
15
14
0
+
×
22
15
15
0
+
×
23
15
16
0
+
×
24
15
17
0
+
×
25
15
18
0
+
×
05
26
15
19
0
+
×
27
15
20
0
+
×
28
15
21
0
+
×
29
15
22
0
+
×
30
15
23
0
+
×
31
15
24
0
+
×
06
February 2026
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
05
01
15
25
0
+
×
06
02
15
26
0
+
×
03
15
27
0
+
×
04
15
28
0
+
×
05
15
29
0
+
×
06
15
30
0
+
×
07
15
31
0
+
×
08
15
32
0
+
×
07
09
15
33
0
+
×
10
15
34
0
+
×
11
15
35
0
+
×
12
15
36
0
+
×
13
15
37
0
+
×
14
15
38
0
+
×
15
15
39
0
+
×
08
16
15
40
0
+
×
17
15
41
0
+
×
18
15
42
0
+
×
19
15
43
0
+
×
20
15
44
0
+
×
21
15
45
0
+
×
22
15
46
0
+
×
09
23
15
47
0
+
×
24
15
48
0
+
×
25
15
49
0
+
×
26
15
50
0
+
×
27
15
51
0
+
×
28
15
52
0
+
×
10
March 2026
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
09
01
15
53
0
+
×
10
02
15
54
0
+
×
03
15
55
0
+
×
04
15
56
0
+
×
05
15
57
0
+
×
06
15
58
0
+
×
07
15
59
0
+
×
08
15
60
0
+
×
11
09
15
61
0
+
×
10
15
62
0
+
×
11
15
63
0
+
×
12
15
64
0
+
×
13
15
65
0
+
×
14
15
66
0
+
×
15
15
67
0
+
×
12
16
15
68
0
+
×
17
15
69
0
+
×
18
15
70
0
+
×
19
15
71
0
+
×
20
15
72
0
+
×
21
15
73
0
+
×
22
15
74
0
+
×
13
23
15
75
0
+
×
24
15
76
0
+
×
25
15
77
0
+
×
26
15
78
0
+
×
27
15
79
0
+
×
28
15
80
0
+
×
29
15
81
0
+
×
14
30
15
82
0
+
×
31
15
83
0
+
×
April 2026
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
14
01
15
84
0
+
×
02
15
85
0
Jueves Santo
+
×
03
15
86
0
Viernes Santo
+
×
04
15
87
0
Sábado Santo
+
×
05
15
88
0
+
×
15
06
15
89
0
+
×
07
15
90
0
+
×
08
15
91
0
+
×
09
15
92
0
+
×
10
15
93
0
+
×
11
15
94
0
+
×
12
15
95
0
+
×
16
13
15
96
0
+
×
14
15
97
0
+
×
15
15
98
0
+
×
16
15
99
0
+
×
17
15
100
0
+
×
18
15
101
0
+
×
19
15
102
0
+
×
17
20
15
103
0
+
×
21
15
104
0
+
×
22
15
105
0
+
×
23
15
106
0
+
×
24
15
107
0
+
×
25
15
108
0
+
×
26
15
109
0
+
×
18
27
15
110
0
+
×
28
15
111
0
+
×
29
15
112
0
+
×
30
15
113
0
+
×
19
 
May 2026
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
18
01
15
114
0
Día del Trabajo
+
×
02
15
115
0
+
×
03
15
116
0
+
×
19
04
15
117
0
+
×
05
15
118
0
+
×
06
15
119
0
+
×
07
15
120
0
+
×
08
15
121
0
+
×
09
15
122
0
+
×
10
15
123
0
+
×
20
11
15
124
0
+
×
12
15
125
0
+
×
13
15
126
0
+
×
14
15
127
0
+
×
15
15
128
0
+
×
16
15
129
0
+
×
17
15
130
0
+
×
21
18
15
131
0
+
×
19
15
132
0
+
×
20
15
133
0
+
×
21
15
134
0
+
×
22
15
135
0
+
×
23
15
136
0
+
×
24
15
137
0
+
×
22
25
15
138
0
+
×
26
15
139
0
+
×
27
15
140
0
+
×
28
15
141
0
+
×
29
15
142
0
+
×
30
15
143
0
+
×
31
15
144
0
+
×
23
June 2026
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
23
01
15
145
0
+
×
02
15
146
0
+
×
03
15
147
0
+
×
04
15
148
0
+
×
05
15
149
0
+
×
06
15
150
0
+
×
07
15
151
0
+
×
24
08
15
152
0
+
×
09
15
153
0
+
×
10
15
154
0
+
×
11
15
155
0
+
×
12
15
156
0
+
×
13
15
157
0
+
×
14
15
158
0
+
×
25
15
15
159
0
+
×
16
15
160
0
+
×
17
15
161
0
+
×
18
15
162
0
+
×
19
15
163
0
+
×
20
15
164
0
+
×
21
15
165
0
+
×
26
22
15
166
0
+
×
23
15
167
0
+
×
24
15
168
0
+
×
25
15
169
0
+
×
26
15
170
0
+
×
27
15
171
0
+
×
28
15
172
0
+
×
27
29
15
173
0
Día del Ejército
+
×
30
15
174
0
+
×
28
July 2026
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
27
01
15
175
0
+
×
02
15
176
0
+
×
03
15
177
0
+
×
04
15
178
0
+
×
05
15
179
0
+
×
28
06
15
180
0
+
×
07
15
181
0
+
×
08
15
182
0
+
×
09
15
183
0
+
×
10
15
184
0
+
×
11
15
185
0
+
×
12
15
186
0
+
×
29
13
15
187
0
+
×
14
15
188
0
+
×
15
15
189
0
+
×
16
15
190
0
+
×
17
15
191
0
+
×
18
15
192
0
+
×
19
15
193
0
+
×
30
20
15
194
0
+
×
21
15
195
0
+
×
22
15
196
0
+
×
23
15
197
0
+
×
24
15
198
0
+
×
25
15
199
0
+
×
26
15
200
0
+
×
31
27
15
201
0
+
×
28
15
202
0
+
×
29
15
203
0
+
×
30
15
204
0
+
×
31
15
205
0
+
×
32
August 2026
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
31
01
15
206
0
+
×
02
15
207
0
+
×
32
03
15
208
0
+
×
04
15
209
0
+
×
05
15
210
0
+
×
06
15
211
0
+
×
07
15
212
0
+
×
08
15
213
0
+
×
09
15
214
0
+
×
33
10
15
215
0
+
×
11
15
216
0
+
×
12
15
217
0
+
×
13
15
218
0
+
×
14
15
219
0
+
×
15
15
220
0
+
×
16
15
221
0
+
×
34
17
15
222
0
+
×
18
15
223
0
+
×
19
15
224
0
+
×
20
15
225
0
+
×
21
15
226
0
+
×
22
15
227
0
+
×
23
15
228
0
+
×
35
24
15
229
0
+
×
25
15
230
0
+
×
26
15
231
0
+
×
27
15
232
0
+
×
28
15
233
0
+
×
29
15
234
0
+
×
30
15
235
0
+
×
36
31
15
236
0
+
×
 
September 2026
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
36
01
15
237
0
+
×
02
15
238
0
+
×
03
15
239
0
+
×
04
15
240
0
+
×
05
15
241
0
+
×
06
15
242
0
+
×
37
07
15
243
0
+
×
08
15
244
0
+
×
09
15
245
0
+
×
10
15
246
0
+
×
11
15
247
0
+
×
12
15
248
0
+
×
13
15
249
0
+
×
38
14
15
250
0
+
×
15
15
251
0
Día de la Independencia
+
×
16
15
252
0
+
×
17
15
253
0
+
×
18
15
254
0
+
×
19
15
255
0
+
×
20
15
256
0
+
×
39
21
15
257
0
+
×
22
15
258
0
+
×
23
15
259
0
+
×
24
15
260
0
+
×
25
15
261
0
+
×
26
15
262
0
+
×
27
15
263
0
+
×
40
28
15
264
0
+
×
29
15
265
0
+
×
30
15
266
0
+
×
41
October 2026
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
40
01
15
267
0
+
×
02
15
268
0
+
×
03
15
269
0
+
×
04
15
270
0
+
×
41
05
15
271
0
+
×
06
15
272
0
+
×
07
15
273
0
+
×
08
15
274
0
+
×
09
15
275
0
+
×
10
15
276
0
+
×
11
15
277
0
+
×
42
12
15
278
0
+
×
13
15
279
0
+
×
14
15
280
0
+
×
15
15
281
0
+
×
16
15
282
0
+
×
17
15
283
0
+
×
18
15
284
0
+
×
43
19
15
285
0
+
×
20
15
286
0
Día de la Revolución
+
×
21
15
287
0
+
×
22
15
288
0
+
×
23
15
289
0
+
×
24
15
290
0
+
×
25
15
291
0
+
×
44
26
15
292
0
+
×
27
15
293
0
+
×
28
15
294
0
+
×
29
15
295
0
+
×
30
15
296
0
+
×
31
15
297
0
+
×
45
November 2026
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
44
01
15
298
0
Día de Todos los Santos
+
×
45
02
15
299
0
+
×
03
15
300
0
+
×
04
15
301
0
+
×
05
15
302
0
+
×
06
15
303
0
+
×
07
15
304
0
+
×
08
15
305
0
+
×
46
09
15
306
0
+
×
10
15
307
0
+
×
11
15
308
0
+
×
12
15
309
0
+
×
13
15
310
0
+
×
14
15
311
0
+
×
15
15
312
0
+
×
47
16
15
313
0
+
×
17
15
314
0
+
×
18
15
315
0
+
×
19
15
316
0
+
×
20
15
317
0
+
×
21
15
318
0
+
×
22
15
319
0
+
×
48
23
15
320
0
+
×
24
15
321
0
+
×
25
15
322
0
+
×
26
15
323
0
+
×
27
15
324
0
+
×
28
15
325
0
+
×
29
15
326
0
+
×
49
30
15
327
0
+
×
December 2026
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
49
01
15
328
0
+
×
02
15
329
0
+
×
03
15
330
0
+
×
04
15
331
0
+
×
05
15
332
0
+
×
06
15
333
0
+
×
50
07
15
334
0
+
×
08
15
335
0
+
×
09
15
336
0
+
×
10
15
337
0
+
×
11
15
338
0
+
×
12
15
339
0
+
×
13
15
340
0
+
×
51
14
15
341
0
+
×
15
15
342
0
+
×
16
15
343
0
+
×
17
15
344
0
+
×
18
15
345
0
+
×
19
15
346
0
+
×
20
15
347
0
+
×
52
21
15
348
0
+
×
22
15
349
0
+
×
23
15
350
0
+
×
24
15
351
0
Noche Buena
+
×
25
15
352
0
Navidad
+
×
26
15
353
0
+
×
27
15
354
0
+
×
53
28
15
355
0
+
×
29
15
356
0
+
×
30
15
357
0
+
×
31
15
358
0
Víspera de Año Nuevo
+
×
01
 
January 2027
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
53
01
15
359
0
Año Nuevo
+
×
02
15
360
0
+
×
03
15
361
0
+
×
01
02
03
04
05
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:
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I have to be at work
I know I want to be on vacation
?
I let the optimizer decide