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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.
Send
..in Belarus
Today, Friday, 20 June, 2025

Working day : yes
Week : 25 / 52
Day of the year : 171 / 365
Working day of the year : 117 / 252
Time (UTC ++3) : 10:30

Working days

EN | BE ▼
dss
Schweiz
Australia
South Africa
New Zealand
Israel
Canada
Portugal
Netherlands
Belgique
Monaco
Greece
Luxembourg
México
Colombia
Venezuela
Argentina
Chile
Working days world map
China
Ukraine
USA
Sweden
Denmark
Norway
Finland
Turkey
Deutschland
Poland
Österreich
South Korea
France
United Kingdom & Ireland
Brasil
India
Japan
Italia
España
...
xxxx
From to
days:
working days:
weekend days:
custom dates:
public holidays:
Define a period
×
From:
Morning
Afternoon
to:
Morning
Afternoon
Reminder
Reminder
▼
make it periodic
Make it periodic
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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 2021
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
53
01
15
0
0
New Year Holiday
+
×
02
15
1
0
New Year Holiday
+
×
03
15
2
0
+
×
01
04
15
3
0
+
×
05
15
4
0
+
×
06
15
5
0
+
×
07
15
6
0
Orthodox Christmas
+
×
08
15
7
0
+
×
09
15
8
0
+
×
10
15
9
0
+
×
02
11
15
10
0
+
×
12
15
11
0
+
×
13
15
12
0
+
×
14
15
13
0
+
×
15
15
14
0
+
×
16
15
15
0
+
×
17
15
16
0
+
×
03
18
15
17
0
+
×
19
15
18
0
+
×
20
15
19
0
+
×
21
15
20
0
+
×
22
15
21
0
+
×
23
15
22
0
+
×
24
15
23
0
+
×
04
25
15
24
0
+
×
26
15
25
0
+
×
27
15
26
0
+
×
28
15
27
0
+
×
29
15
28
0
+
×
30
15
29
0
+
×
31
15
30
0
+
×
05
February 2021
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
+
×
07
15
37
0
+
×
06
08
15
38
0
+
×
09
15
39
0
+
×
10
15
40
0
+
×
11
15
41
0
+
×
12
15
42
0
+
×
13
15
43
0
+
×
14
15
44
0
+
×
07
15
15
45
0
+
×
16
15
46
0
+
×
17
15
47
0
+
×
18
15
48
0
+
×
19
15
49
0
+
×
20
15
50
0
+
×
21
15
51
0
+
×
08
22
15
52
0
+
×
23
15
53
0
+
×
24
15
54
0
+
×
25
15
55
0
+
×
26
15
56
0
+
×
27
15
57
0
+
×
28
15
58
0
+
×
09
10
March 2021
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
+
×
05
15
63
0
+
×
06
15
64
0
+
×
07
15
65
0
+
×
10
08
15
66
0
Women's Day
+
×
09
15
67
0
+
×
10
15
68
0
+
×
11
15
69
0
+
×
12
15
70
0
+
×
13
15
71
0
+
×
14
15
72
0
+
×
11
15
15
73
0
+
×
16
15
74
0
+
×
17
15
75
0
+
×
18
15
76
0
+
×
19
15
77
0
+
×
20
15
78
0
+
×
21
15
79
0
+
×
12
22
15
80
0
+
×
23
15
81
0
+
×
24
15
82
0
+
×
25
15
83
0
+
×
26
15
84
0
+
×
27
15
85
0
+
×
28
15
86
0
+
×
13
29
15
87
0
+
×
30
15
88
0
+
×
31
15
89
0
+
×
14
April 2021
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
13
01
15
90
0
+
×
02
15
91
0
+
×
03
15
92
0
+
×
04
15
93
0
+
×
14
05
15
94
0
+
×
06
15
95
0
+
×
07
15
96
0
+
×
08
15
97
0
+
×
09
15
98
0
+
×
10
15
99
0
+
×
11
15
100
0
+
×
15
12
15
101
0
+
×
13
15
102
0
+
×
14
15
103
0
+
×
15
15
104
0
+
×
16
15
105
0
+
×
17
15
106
0
+
×
18
15
107
0
+
×
16
19
15
108
0
+
×
20
15
109
0
+
×
21
15
110
0
+
×
22
15
111
0
+
×
23
15
112
0
+
×
24
15
113
0
+
×
25
15
114
0
+
×
17
26
15
115
0
+
×
27
15
116
0
+
×
28
15
117
0
+
×
29
15
118
0
+
×
30
15
119
0
+
×
18
 
May 2021
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
17
01
15
120
0
Labour Day
+
×
02
15
121
0
+
×
18
03
15
122
0
+
×
04
15
123
0
+
×
05
15
124
0
+
×
06
15
125
0
+
×
07
15
126
0
+
×
08
15
127
0
+
×
09
15
128
0
Victory Day
+
×
19
10
15
129
0
+
×
11
15
130
0
Radonitsa
+
×
12
15
131
0
+
×
13
15
132
0
+
×
14
15
133
0
+
×
15
15
134
0
+
×
16
15
135
0
+
×
20
17
15
136
0
+
×
18
15
137
0
+
×
19
15
138
0
+
×
20
15
139
0
+
×
21
15
140
0
+
×
22
15
141
0
+
×
23
15
142
0
+
×
21
24
15
143
0
+
×
25
15
144
0
+
×
26
15
145
0
+
×
27
15
146
0
+
×
28
15
147
0
+
×
29
15
148
0
+
×
30
15
149
0
+
×
22
31
15
150
0
+
×
June 2021
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
22
01
15
151
0
+
×
02
15
152
0
+
×
03
15
153
0
+
×
04
15
154
0
+
×
05
15
155
0
+
×
06
15
156
0
+
×
23
07
15
157
0
+
×
08
15
158
0
+
×
09
15
159
0
+
×
10
15
160
0
+
×
11
15
161
0
+
×
12
15
162
0
+
×
13
15
163
0
+
×
24
14
15
164
0
+
×
15
15
165
0
+
×
16
15
166
0
+
×
17
15
167
0
+
×
18
15
168
0
+
×
19
15
169
0
+
×
20
15
170
0
+
×
25
21
15
171
0
+
×
22
15
172
0
+
×
23
15
173
0
+
×
24
15
174
0
+
×
25
15
175
0
+
×
26
15
176
0
+
×
27
15
177
0
+
×
26
28
15
178
0
+
×
29
15
179
0
+
×
30
15
180
0
+
×
27
July 2021
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
26
01
15
181
0
+
×
02
15
182
0
+
×
03
15
183
0
Independence Day
+
×
04
15
184
0
+
×
27
05
15
185
0
+
×
06
15
186
0
+
×
07
15
187
0
+
×
08
15
188
0
+
×
09
15
189
0
+
×
10
15
190
0
+
×
11
15
191
0
+
×
28
12
15
192
0
+
×
13
15
193
0
+
×
14
15
194
0
+
×
15
15
195
0
+
×
16
15
196
0
+
×
17
15
197
0
+
×
18
15
198
0
+
×
29
19
15
199
0
+
×
20
15
200
0
+
×
21
15
201
0
+
×
22
15
202
0
+
×
23
15
203
0
+
×
24
15
204
0
+
×
25
15
205
0
+
×
30
26
15
206
0
+
×
27
15
207
0
+
×
28
15
208
0
+
×
29
15
209
0
+
×
30
15
210
0
+
×
31
15
211
0
+
×
31
August 2021
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
30
01
15
212
0
+
×
31
02
15
213
0
+
×
03
15
214
0
+
×
04
15
215
0
+
×
05
15
216
0
+
×
06
15
217
0
+
×
07
15
218
0
+
×
08
15
219
0
+
×
32
09
15
220
0
+
×
10
15
221
0
+
×
11
15
222
0
+
×
12
15
223
0
+
×
13
15
224
0
+
×
14
15
225
0
+
×
15
15
226
0
+
×
33
16
15
227
0
+
×
17
15
228
0
+
×
18
15
229
0
+
×
19
15
230
0
+
×
20
15
231
0
+
×
21
15
232
0
+
×
22
15
233
0
+
×
34
23
15
234
0
+
×
24
15
235
0
+
×
25
15
236
0
+
×
26
15
237
0
+
×
27
15
238
0
+
×
28
15
239
0
+
×
29
15
240
0
+
×
35
30
15
241
0
+
×
31
15
242
0
+
×
 
September 2021
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
35
01
15
243
0
+
×
02
15
244
0
+
×
03
15
245
0
+
×
04
15
246
0
+
×
05
15
247
0
+
×
36
06
15
248
0
+
×
07
15
249
0
+
×
08
15
250
0
+
×
09
15
251
0
+
×
10
15
252
0
+
×
11
15
253
0
+
×
12
15
254
0
+
×
37
13
15
255
0
+
×
14
15
256
0
+
×
15
15
257
0
+
×
16
15
258
0
+
×
17
15
259
0
+
×
18
15
260
0
+
×
19
15
261
0
+
×
38
20
15
262
0
+
×
21
15
263
0
+
×
22
15
264
0
+
×
23
15
265
0
+
×
24
15
266
0
+
×
25
15
267
0
+
×
26
15
268
0
+
×
39
27
15
269
0
+
×
28
15
270
0
+
×
29
15
271
0
+
×
30
15
272
0
+
×
40
October 2021
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
39
01
15
273
0
+
×
02
15
274
0
+
×
03
15
275
0
+
×
40
04
15
276
0
+
×
05
15
277
0
+
×
06
15
278
0
+
×
07
15
279
0
+
×
08
15
280
0
+
×
09
15
281
0
+
×
10
15
282
0
+
×
41
11
15
283
0
+
×
12
15
284
0
+
×
13
15
285
0
+
×
14
15
286
0
+
×
15
15
287
0
+
×
16
15
288
0
+
×
17
15
289
0
+
×
42
18
15
290
0
+
×
19
15
291
0
+
×
20
15
292
0
+
×
21
15
293
0
+
×
22
15
294
0
+
×
23
15
295
0
+
×
24
15
296
0
+
×
43
25
15
297
0
+
×
26
15
298
0
+
×
27
15
299
0
+
×
28
15
300
0
+
×
29
15
301
0
+
×
30
15
302
0
+
×
31
15
303
0
+
×
44
November 2021
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
44
01
15
304
0
+
×
02
15
305
0
+
×
03
15
306
0
+
×
04
15
307
0
+
×
05
15
308
0
+
×
06
15
309
0
+
×
07
15
310
0
October Revolution Day
+
×
45
08
15
311
0
+
×
09
15
312
0
+
×
10
15
313
0
+
×
11
15
314
0
+
×
12
15
315
0
+
×
13
15
316
0
+
×
14
15
317
0
+
×
46
15
15
318
0
+
×
16
15
319
0
+
×
17
15
320
0
+
×
18
15
321
0
+
×
19
15
322
0
+
×
20
15
323
0
+
×
21
15
324
0
+
×
47
22
15
325
0
+
×
23
15
326
0
+
×
24
15
327
0
+
×
25
15
328
0
+
×
26
15
329
0
+
×
27
15
330
0
+
×
28
15
331
0
+
×
48
29
15
332
0
+
×
30
15
333
0
+
×
49
December 2021
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
48
01
15
334
0
+
×
02
15
335
0
+
×
03
15
336
0
+
×
04
15
337
0
+
×
05
15
338
0
+
×
49
06
15
339
0
+
×
07
15
340
0
+
×
08
15
341
0
+
×
09
15
342
0
+
×
10
15
343
0
+
×
11
15
344
0
+
×
12
15
345
0
+
×
50
13
15
346
0
+
×
14
15
347
0
+
×
15
15
348
0
+
×
16
15
349
0
+
×
17
15
350
0
+
×
18
15
351
0
+
×
19
15
352
0
+
×
51
20
15
353
0
+
×
21
15
354
0
+
×
22
15
355
0
+
×
23
15
356
0
+
×
24
15
357
0
+
×
25
15
358
0
Christmas Day
+
×
26
15
359
0
+
×
52
27
15
360
0
+
×
28
15
361
0
+
×
29
15
362
0
+
×
30
15
363
0
+
×
31
15
364
0
+
×
01
 
January 2022
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
52
01
15
365
0
New Year Holiday
+
×
02
15
366
0
New Year Holiday
+
×
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:
?
Copy
×
From to
:
I have to be at work
I know I want to be on vacation
?
I let the optimizer decide