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Birthdays
Holidays optimizer
Define a period
AI Assistant beta
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”
Assistant: I understand all languages.
Send
..in Poland
| National public holidays
Today, Wednesday, 29 January, 2025

Working day : yes
Week : 05 / 52
Day of the year : 29 / 365
Working day of the year : 19 / 252
Time (UTC +01) : 20:08

Working days

EN | PL ▼
dss
South Korea
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
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
Description
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Work hours
/day
▼
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wages
Wages
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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 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
01
02
03
04
05
29
15
0
0
+
×
30
15
1
0
+
×
31
15
2
0
+
×
06
February 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
05
01
15
3
0
+
×
02
15
4
0
+
×
06
03
15
5
0
+
×
04
15
6
0
+
×
05
15
7
0
+
×
06
15
8
0
+
×
07
15
9
0
+
×
08
15
10
0
+
×
09
15
11
0
+
×
07
10
15
12
0
+
×
11
15
13
0
+
×
12
15
14
0
+
×
13
15
15
0
+
×
14
15
16
0
+
×
15
15
17
0
+
×
16
15
18
0
+
×
08
17
15
19
0
+
×
18
15
20
0
+
×
19
15
21
0
+
×
20
15
22
0
+
×
21
15
23
0
+
×
22
15
24
0
+
×
23
15
25
0
+
×
09
24
15
26
0
+
×
25
15
27
0
+
×
26
15
28
0
+
×
27
15
29
0
+
×
28
15
30
0
+
×
10
March 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
09
01
15
31
0
+
×
02
15
32
0
+
×
10
03
15
33
0
+
×
04
15
34
0
+
×
05
15
35
0
+
×
06
15
36
0
+
×
07
15
37
0
+
×
08
15
38
0
+
×
09
15
39
0
+
×
11
10
15
40
0
+
×
11
15
41
0
+
×
12
15
42
0
+
×
13
15
43
0
+
×
14
15
44
0
+
×
15
15
45
0
+
×
16
15
46
0
+
×
12
17
15
47
0
+
×
18
15
48
0
+
×
19
15
49
0
+
×
20
15
50
0
+
×
21
15
51
0
+
×
22
15
52
0
+
×
23
15
53
0
+
×
13
24
15
54
0
+
×
25
15
55
0
+
×
26
15
56
0
+
×
27
15
57
0
+
×
28
15
58
0
+
×
29
15
59
0
+
×
30
15
60
0
+
×
14
31
15
61
0
+
×
April 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
14
01
15
62
0
+
×
02
15
63
0
+
×
03
15
64
0
+
×
04
15
65
0
+
×
05
15
66
0
+
×
06
15
67
0
+
×
15
07
15
68
0
+
×
08
15
69
0
+
×
09
15
70
0
+
×
10
15
71
0
+
×
11
15
72
0
+
×
12
15
73
0
+
×
13
15
74
0
+
×
16
14
15
75
0
+
×
15
15
76
0
+
×
16
15
77
0
+
×
17
15
78
0
+
×
18
15
79
0
+
×
19
15
80
0
+
×
20
15
81
0
Easter Sunday
+
×
17
21
15
82
0
Easter Monday
+
×
22
15
83
0
+
×
23
15
84
0
+
×
24
15
85
0
+
×
25
15
86
0
+
×
26
15
87
0
+
×
27
15
88
0
+
×
18
28
15
89
0
+
×
29
15
90
0
+
×
30
15
91
0
+
×
19
 
May 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
18
01
15
92
0
Labour Day
+
×
02
15
93
0
+
×
03
15
94
0
Constitution Day
+
×
04
15
95
0
+
×
19
05
15
96
0
+
×
06
15
97
0
+
×
07
15
98
0
+
×
08
15
99
0
+
×
09
15
100
0
+
×
10
15
101
0
+
×
11
15
102
0
+
×
20
12
15
103
0
+
×
13
15
104
0
+
×
14
15
105
0
+
×
15
15
106
0
+
×
16
15
107
0
+
×
17
15
108
0
+
×
18
15
109
0
+
×
21
19
15
110
0
+
×
20
15
111
0
+
×
21
15
112
0
+
×
22
15
113
0
+
×
23
15
114
0
+
×
24
15
115
0
+
×
25
15
116
0
+
×
22
26
15
117
0
+
×
27
15
118
0
+
×
28
15
119
0
+
×
29
15
120
0
+
×
30
15
121
0
+
×
31
15
122
0
+
×
23
June 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
22
01
15
123
0
+
×
23
02
15
124
0
+
×
03
15
125
0
+
×
04
15
126
0
+
×
05
15
127
0
+
×
06
15
128
0
+
×
07
15
129
0
+
×
08
15
130
0
Pentecost Sunday
+
×
24
09
15
131
0
+
×
10
15
132
0
+
×
11
15
133
0
+
×
12
15
134
0
+
×
13
15
135
0
+
×
14
15
136
0
+
×
15
15
137
0
+
×
25
16
15
138
0
+
×
17
15
139
0
+
×
18
15
140
0
+
×
19
15
141
0
Corpus Christi
+
×
20
15
142
0
+
×
21
15
143
0
+
×
22
15
144
0
+
×
26
23
15
145
0
+
×
24
15
146
0
+
×
25
15
147
0
+
×
26
15
148
0
+
×
27
15
149
0
+
×
28
15
150
0
+
×
29
15
151
0
+
×
27
30
15
152
0
+
×
July 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
27
01
15
153
0
+
×
02
15
154
0
+
×
03
15
155
0
+
×
04
15
156
0
+
×
05
15
157
0
+
×
06
15
158
0
+
×
28
07
15
159
0
+
×
08
15
160
0
+
×
09
15
161
0
+
×
10
15
162
0
+
×
11
15
163
0
+
×
12
15
164
0
+
×
13
15
165
0
+
×
29
14
15
166
0
+
×
15
15
167
0
+
×
16
15
168
0
+
×
17
15
169
0
+
×
18
15
170
0
+
×
19
15
171
0
+
×
20
15
172
0
+
×
30
21
15
173
0
+
×
22
15
174
0
+
×
23
15
175
0
+
×
24
15
176
0
+
×
25
15
177
0
+
×
26
15
178
0
+
×
27
15
179
0
+
×
31
28
15
180
0
+
×
29
15
181
0
+
×
30
15
182
0
+
×
31
15
183
0
+
×
32
August 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
31
01
15
184
0
+
×
02
15
185
0
+
×
03
15
186
0
+
×
32
04
15
187
0
+
×
05
15
188
0
+
×
06
15
189
0
+
×
07
15
190
0
+
×
08
15
191
0
+
×
09
15
192
0
+
×
10
15
193
0
+
×
33
11
15
194
0
+
×
12
15
195
0
+
×
13
15
196
0
+
×
14
15
197
0
+
×
15
15
198
0
Assumption
+
×
16
15
199
0
+
×
17
15
200
0
+
×
34
18
15
201
0
+
×
19
15
202
0
+
×
20
15
203
0
+
×
21
15
204
0
+
×
22
15
205
0
+
×
23
15
206
0
+
×
24
15
207
0
+
×
35
25
15
208
0
+
×
26
15
209
0
+
×
27
15
210
0
+
×
28
15
211
0
+
×
29
15
212
0
+
×
30
15
213
0
+
×
31
15
214
0
+
×
36
 
September 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
36
01
15
215
0
+
×
02
15
216
0
+
×
03
15
217
0
+
×
04
15
218
0
+
×
05
15
219
0
+
×
06
15
220
0
+
×
07
15
221
0
+
×
37
08
15
222
0
+
×
09
15
223
0
+
×
10
15
224
0
+
×
11
15
225
0
+
×
12
15
226
0
+
×
13
15
227
0
+
×
14
15
228
0
+
×
38
15
15
229
0
+
×
16
15
230
0
+
×
17
15
231
0
+
×
18
15
232
0
+
×
19
15
233
0
+
×
20
15
234
0
+
×
21
15
235
0
+
×
39
22
15
236
0
+
×
23
15
237
0
+
×
24
15
238
0
+
×
25
15
239
0
+
×
26
15
240
0
+
×
27
15
241
0
+
×
28
15
242
0
+
×
40
29
15
243
0
+
×
30
15
244
0
+
×
41
October 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
40
01
15
245
0
+
×
02
15
246
0
+
×
03
15
247
0
+
×
04
15
248
0
+
×
05
15
249
0
+
×
41
06
15
250
0
+
×
07
15
251
0
+
×
08
15
252
0
+
×
09
15
253
0
+
×
10
15
254
0
+
×
11
15
255
0
+
×
12
15
256
0
+
×
42
13
15
257
0
+
×
14
15
258
0
+
×
15
15
259
0
+
×
16
15
260
0
+
×
17
15
261
0
+
×
18
15
262
0
+
×
19
15
263
0
+
×
43
20
15
264
0
+
×
21
15
265
0
+
×
22
15
266
0
+
×
23
15
267
0
+
×
24
15
268
0
+
×
25
15
269
0
+
×
26
15
270
0
+
×
44
27
15
271
0
+
×
28
15
272
0
+
×
29
15
273
0
+
×
30
15
274
0
+
×
31
15
275
0
+
×
45
November 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
44
01
15
276
0
All Saints' Day
+
×
02
15
277
0
+
×
45
03
15
278
0
+
×
04
15
279
0
+
×
05
15
280
0
+
×
06
15
281
0
+
×
07
15
282
0
+
×
08
15
283
0
+
×
09
15
284
0
+
×
46
10
15
285
0
+
×
11
15
286
0
Independence Day
+
×
12
15
287
0
+
×
13
15
288
0
+
×
14
15
289
0
+
×
15
15
290
0
+
×
16
15
291
0
+
×
47
17
15
292
0
+
×
18
15
293
0
+
×
19
15
294
0
+
×
20
15
295
0
+
×
21
15
296
0
+
×
22
15
297
0
+
×
23
15
298
0
+
×
48
24
15
299
0
+
×
25
15
300
0
+
×
26
15
301
0
+
×
27
15
302
0
+
×
28
15
303
0
+
×
29
15
304
0
+
×
30
15
305
0
+
×
49
December 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
49
01
15
306
0
+
×
02
15
307
0
+
×
03
15
308
0
+
×
04
15
309
0
+
×
05
15
310
0
+
×
06
15
311
0
+
×
07
15
312
0
+
×
50
08
15
313
0
+
×
09
15
314
0
+
×
10
15
315
0
+
×
11
15
316
0
+
×
12
15
317
0
+
×
13
15
318
0
+
×
14
15
319
0
+
×
51
15
15
320
0
+
×
16
15
321
0
+
×
17
15
322
0
+
×
18
15
323
0
+
×
19
15
324
0
+
×
20
15
325
0
+
×
21
15
326
0
+
×
52
22
15
327
0
+
×
23
15
328
0
+
×
24
15
329
0
+
×
25
15
330
0
Christmas
+
×
26
15
331
0
Boxing Day
+
×
27
15
332
0
+
×
28
15
333
0
+
×
01
29
15
334
0
+
×
30
15
335
0
+
×
31
15
336
0
+
×
02
 
January 2026
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
01
01
15
337
0
New Year's Day
+
×
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