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Birthdays
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 Guatemala
| Días festivos nacionales
Today, Saturday, 19 July, 2025

Working day : no (weekend day)
Week : 29 / 52
Day of the year : 200 / 365
Working day of the year : 138 / 252
Time (UTC -6) : 06:08

Working days

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Israel
Sweden
Denmark
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Greece
Luxembourg
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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
From to
days:
working days:
weekend days:
custom dates:
public holidays:
Define a period
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From:
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Afternoon
to:
Morning
Afternoon
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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 2007
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
01
01
15
0
0
Año Nuevo
+
×
02
15
1
0
+
×
03
15
2
0
+
×
04
15
3
0
+
×
05
15
4
0
+
×
06
15
5
0
+
×
07
15
6
0
+
×
02
08
15
7
0
+
×
09
15
8
0
+
×
10
15
9
0
+
×
11
15
10
0
+
×
12
15
11
0
+
×
13
15
12
0
+
×
14
15
13
0
+
×
03
15
15
14
0
+
×
16
15
15
0
+
×
17
15
16
0
+
×
18
15
17
0
+
×
19
15
18
0
+
×
20
15
19
0
+
×
21
15
20
0
+
×
04
22
15
21
0
+
×
23
15
22
0
+
×
24
15
23
0
+
×
25
15
24
0
+
×
26
15
25
0
+
×
27
15
26
0
+
×
28
15
27
0
+
×
05
29
15
28
0
+
×
30
15
29
0
+
×
31
15
30
0
+
×
06
February 2007
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
+
×
06
05
15
35
0
+
×
06
15
36
0
+
×
07
15
37
0
+
×
08
15
38
0
+
×
09
15
39
0
+
×
10
15
40
0
+
×
11
15
41
0
+
×
07
12
15
42
0
+
×
13
15
43
0
+
×
14
15
44
0
+
×
15
15
45
0
+
×
16
15
46
0
+
×
17
15
47
0
+
×
18
15
48
0
+
×
08
19
15
49
0
+
×
20
15
50
0
+
×
21
15
51
0
+
×
22
15
52
0
+
×
23
15
53
0
+
×
24
15
54
0
+
×
25
15
55
0
+
×
09
26
15
56
0
+
×
27
15
57
0
+
×
28
15
58
0
+
×
10
March 2007
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
09
01
15
59
0
+
×
02
15
60
0
+
×
03
15
61
0
+
×
04
15
62
0
+
×
10
05
15
63
0
+
×
06
15
64
0
+
×
07
15
65
0
+
×
08
15
66
0
+
×
09
15
67
0
+
×
10
15
68
0
+
×
11
15
69
0
+
×
11
12
15
70
0
+
×
13
15
71
0
+
×
14
15
72
0
+
×
15
15
73
0
+
×
16
15
74
0
+
×
17
15
75
0
+
×
18
15
76
0
+
×
12
19
15
77
0
+
×
20
15
78
0
+
×
21
15
79
0
+
×
22
15
80
0
+
×
23
15
81
0
+
×
24
15
82
0
+
×
25
15
83
0
+
×
13
26
15
84
0
+
×
27
15
85
0
+
×
28
15
86
0
+
×
29
15
87
0
+
×
30
15
88
0
+
×
31
15
89
0
+
×
14
April 2007
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
13
01
15
90
0
+
×
14
02
15
91
0
+
×
03
15
92
0
+
×
04
15
93
0
+
×
05
15
94
0
Jueves Santo
+
×
06
15
95
0
Viernes Santo
+
×
07
15
96
0
Sábado Santo
+
×
08
15
97
0
+
×
15
09
15
98
0
+
×
10
15
99
0
+
×
11
15
100
0
+
×
12
15
101
0
+
×
13
15
102
0
+
×
14
15
103
0
+
×
15
15
104
0
+
×
16
16
15
105
0
+
×
17
15
106
0
+
×
18
15
107
0
+
×
19
15
108
0
+
×
20
15
109
0
+
×
21
15
110
0
+
×
22
15
111
0
+
×
17
23
15
112
0
+
×
24
15
113
0
+
×
25
15
114
0
+
×
26
15
115
0
+
×
27
15
116
0
+
×
28
15
117
0
+
×
29
15
118
0
+
×
18
30
15
119
0
+
×
 
May 2007
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
18
01
15
120
0
Día del Trabajo
+
×
02
15
121
0
+
×
03
15
122
0
+
×
04
15
123
0
+
×
05
15
124
0
+
×
06
15
125
0
+
×
19
07
15
126
0
+
×
08
15
127
0
+
×
09
15
128
0
+
×
10
15
129
0
+
×
11
15
130
0
+
×
12
15
131
0
+
×
13
15
132
0
+
×
20
14
15
133
0
+
×
15
15
134
0
+
×
16
15
135
0
+
×
17
15
136
0
+
×
18
15
137
0
+
×
19
15
138
0
+
×
20
15
139
0
+
×
21
21
15
140
0
+
×
22
15
141
0
+
×
23
15
142
0
+
×
24
15
143
0
+
×
25
15
144
0
+
×
26
15
145
0
+
×
27
15
146
0
+
×
22
28
15
147
0
+
×
29
15
148
0
+
×
30
15
149
0
+
×
31
15
150
0
+
×
23
June 2007
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
22
01
15
151
0
+
×
02
15
152
0
+
×
03
15
153
0
+
×
23
04
15
154
0
+
×
05
15
155
0
+
×
06
15
156
0
+
×
07
15
157
0
+
×
08
15
158
0
+
×
09
15
159
0
+
×
10
15
160
0
+
×
24
11
15
161
0
+
×
12
15
162
0
+
×
13
15
163
0
+
×
14
15
164
0
+
×
15
15
165
0
+
×
16
15
166
0
+
×
17
15
167
0
+
×
25
18
15
168
0
+
×
19
15
169
0
+
×
20
15
170
0
+
×
21
15
171
0
+
×
22
15
172
0
+
×
23
15
173
0
+
×
24
15
174
0
+
×
26
25
15
175
0
+
×
26
15
176
0
+
×
27
15
177
0
+
×
28
15
178
0
+
×
29
15
179
0
+
×
30
15
180
0
+
×
27
July 2007
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
26
01
15
181
0
+
×
27
02
15
182
0
Día del Ejército
+
×
03
15
183
0
+
×
04
15
184
0
+
×
05
15
185
0
+
×
06
15
186
0
+
×
07
15
187
0
+
×
08
15
188
0
+
×
28
09
15
189
0
+
×
10
15
190
0
+
×
11
15
191
0
+
×
12
15
192
0
+
×
13
15
193
0
+
×
14
15
194
0
+
×
15
15
195
0
+
×
29
16
15
196
0
+
×
17
15
197
0
+
×
18
15
198
0
+
×
19
15
199
0
+
×
20
15
200
0
+
×
21
15
201
0
+
×
22
15
202
0
+
×
30
23
15
203
0
+
×
24
15
204
0
+
×
25
15
205
0
+
×
26
15
206
0
+
×
27
15
207
0
+
×
28
15
208
0
+
×
29
15
209
0
+
×
31
30
15
210
0
+
×
31
15
211
0
+
×
August 2007
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
31
01
15
212
0
+
×
02
15
213
0
+
×
03
15
214
0
+
×
04
15
215
0
+
×
05
15
216
0
+
×
32
06
15
217
0
+
×
07
15
218
0
+
×
08
15
219
0
+
×
09
15
220
0
+
×
10
15
221
0
+
×
11
15
222
0
+
×
12
15
223
0
+
×
33
13
15
224
0
+
×
14
15
225
0
+
×
15
15
226
0
+
×
16
15
227
0
+
×
17
15
228
0
+
×
18
15
229
0
+
×
19
15
230
0
+
×
34
20
15
231
0
+
×
21
15
232
0
+
×
22
15
233
0
+
×
23
15
234
0
+
×
24
15
235
0
+
×
25
15
236
0
+
×
26
15
237
0
+
×
35
27
15
238
0
+
×
28
15
239
0
+
×
29
15
240
0
+
×
30
15
241
0
+
×
31
15
242
0
+
×
36
 
September 2007
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
35
01
15
243
0
+
×
02
15
244
0
+
×
36
03
15
245
0
+
×
04
15
246
0
+
×
05
15
247
0
+
×
06
15
248
0
+
×
07
15
249
0
+
×
08
15
250
0
+
×
09
15
251
0
+
×
37
10
15
252
0
+
×
11
15
253
0
+
×
12
15
254
0
+
×
13
15
255
0
+
×
14
15
256
0
+
×
15
15
257
0
Día de la Independencia
+
×
16
15
258
0
+
×
38
17
15
259
0
+
×
18
15
260
0
+
×
19
15
261
0
+
×
20
15
262
0
+
×
21
15
263
0
+
×
22
15
264
0
+
×
23
15
265
0
+
×
39
24
15
266
0
+
×
25
15
267
0
+
×
26
15
268
0
+
×
27
15
269
0
+
×
28
15
270
0
+
×
29
15
271
0
+
×
30
15
272
0
+
×
40
October 2007
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
40
01
15
273
0
+
×
02
15
274
0
+
×
03
15
275
0
+
×
04
15
276
0
+
×
05
15
277
0
+
×
06
15
278
0
+
×
07
15
279
0
+
×
41
08
15
280
0
+
×
09
15
281
0
+
×
10
15
282
0
+
×
11
15
283
0
+
×
12
15
284
0
+
×
13
15
285
0
+
×
14
15
286
0
+
×
42
15
15
287
0
+
×
16
15
288
0
+
×
17
15
289
0
+
×
18
15
290
0
+
×
19
15
291
0
+
×
20
15
292
0
Día de la Revolución
+
×
21
15
293
0
+
×
43
22
15
294
0
+
×
23
15
295
0
+
×
24
15
296
0
+
×
25
15
297
0
+
×
26
15
298
0
+
×
27
15
299
0
+
×
28
15
300
0
+
×
44
29
15
301
0
+
×
30
15
302
0
+
×
31
15
303
0
+
×
45
November 2007
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
44
01
15
304
0
Día de Todos los Santos
+
×
02
15
305
0
+
×
03
15
306
0
+
×
04
15
307
0
+
×
45
05
15
308
0
+
×
06
15
309
0
+
×
07
15
310
0
+
×
08
15
311
0
+
×
09
15
312
0
+
×
10
15
313
0
+
×
11
15
314
0
+
×
46
12
15
315
0
+
×
13
15
316
0
+
×
14
15
317
0
+
×
15
15
318
0
+
×
16
15
319
0
+
×
17
15
320
0
+
×
18
15
321
0
+
×
47
19
15
322
0
+
×
20
15
323
0
+
×
21
15
324
0
+
×
22
15
325
0
+
×
23
15
326
0
+
×
24
15
327
0
+
×
25
15
328
0
+
×
48
26
15
329
0
+
×
27
15
330
0
+
×
28
15
331
0
+
×
29
15
332
0
+
×
30
15
333
0
+
×
49
December 2007
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
48
01
15
334
0
+
×
02
15
335
0
+
×
49
03
15
336
0
+
×
04
15
337
0
+
×
05
15
338
0
+
×
06
15
339
0
+
×
07
15
340
0
+
×
08
15
341
0
+
×
09
15
342
0
+
×
50
10
15
343
0
+
×
11
15
344
0
+
×
12
15
345
0
+
×
13
15
346
0
+
×
14
15
347
0
+
×
15
15
348
0
+
×
16
15
349
0
+
×
51
17
15
350
0
+
×
18
15
351
0
+
×
19
15
352
0
+
×
20
15
353
0
+
×
21
15
354
0
+
×
22
15
355
0
+
×
23
15
356
0
+
×
52
24
15
357
0
Noche Buena
+
×
25
15
358
0
Navidad
+
×
26
15
359
0
+
×
27
15
360
0
+
×
28
15
361
0
+
×
29
15
362
0
+
×
30
15
363
0
+
×
01
31
15
364
0
Víspera de Año Nuevo
+
×
 
January 2008
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
01
01
15
365
0
Año Nuevo
+
×
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