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Birthdays
Holidays optimizer
Define a period
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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 Austria
| Vorarlberg
Today, Thursday, 18 September, 2025

Working day : yes
Week : 38 / 52
Day of the year : 261 / 365
Working day of the year : 178 / 249
Time (UTC ++2) : 17:01

Working days

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Sweden
Denmark
Norway
Finland
Turkey
Portugal
Brasil
India
México
Colombia
Venezuela
Argentina
Japan
Monaco
Greece
Luxembourg
Australia
Working days world map
Deutschland
Poland
Österreich
Schweiz
Italia
USA
France
United Kingdom & Ireland
Netherlands
Belgique
China
South Korea
Canada
España
South Africa
New Zealand
Russia
Ukraine
Israel
...
xxxx
From to
days:
working days:
weekend days:
custom dates:
public holidays:
school holidays:
Define a period
×
From:
Morning
Afternoon
to:
Morning
Afternoon
Reminder
Reminder
▼
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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 1992
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
01
01
15
0
0
Neujahrstag
+
×
02
15
1
0
+
×
03
15
2
0
+
×
04
15
3
0
+
×
05
15
4
0
+
×
02
06
15
5
0
Heilige Drei Könige
+
×
07
15
6
0
+
×
08
15
7
0
+
×
09
15
8
0
+
×
10
15
9
0
+
×
11
15
10
0
+
×
12
15
11
0
+
×
03
13
15
12
0
+
×
14
15
13
0
+
×
15
15
14
0
+
×
16
15
15
0
+
×
17
15
16
0
+
×
18
15
17
0
+
×
19
15
18
0
+
×
04
20
15
19
0
+
×
21
15
20
0
+
×
22
15
21
0
+
×
23
15
22
0
+
×
24
15
23
0
+
×
25
15
24
0
+
×
26
15
25
0
+
×
05
27
15
26
0
+
×
28
15
27
0
+
×
29
15
28
0
+
×
30
15
29
0
+
×
31
15
30
0
+
×
06
February 1992
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
05
01
15
31
0
+
×
02
15
32
0
+
×
06
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
+
×
07
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
+
×
08
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
+
×
09
24
15
54
0
+
×
25
15
55
0
+
×
26
15
56
0
+
×
27
15
57
0
+
×
28
15
58
0
+
×
29
15
59
0
+
×
10
March 1992
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
09
01
15
60
0
+
×
10
02
15
61
0
+
×
03
15
62
0
+
×
04
15
63
0
+
×
05
15
64
0
+
×
06
15
65
0
+
×
07
15
66
0
+
×
08
15
67
0
+
×
11
09
15
68
0
+
×
10
15
69
0
+
×
11
15
70
0
+
×
12
15
71
0
+
×
13
15
72
0
+
×
14
15
73
0
+
×
15
15
74
0
+
×
12
16
15
75
0
+
×
17
15
76
0
+
×
18
15
77
0
+
×
19
15
78
0
St. Josef
+
×
20
15
79
0
+
×
21
15
80
0
+
×
22
15
81
0
+
×
13
23
15
82
0
+
×
24
15
83
0
+
×
25
15
84
0
+
×
26
15
85
0
+
×
27
15
86
0
+
×
28
15
87
0
+
×
29
15
88
0
+
×
14
30
15
89
0
+
×
31
15
90
0
+
×
April 1992
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
14
01
15
91
0
+
×
02
15
92
0
+
×
03
15
93
0
+
×
04
15
94
0
+
×
05
15
95
0
+
×
15
06
15
96
0
+
×
07
15
97
0
+
×
08
15
98
0
+
×
09
15
99
0
+
×
10
15
100
0
+
×
11
15
101
0
+
×
12
15
102
0
+
×
16
13
15
103
0
+
×
14
15
104
0
+
×
15
15
105
0
+
×
16
15
106
0
+
×
17
15
107
0
+
×
18
15
108
0
+
×
19
15
109
0
+
×
17
20
15
110
0
Ostermontag
+
×
21
15
111
0
+
×
22
15
112
0
+
×
23
15
113
0
+
×
24
15
114
0
+
×
25
15
115
0
+
×
26
15
116
0
+
×
18
27
15
117
0
+
×
28
15
118
0
+
×
29
15
119
0
+
×
30
15
120
0
+
×
19
 
May 1992
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
18
01
15
121
0
Staatsfeiertag
+
×
02
15
122
0
+
×
03
15
123
0
+
×
19
04
15
124
0
+
×
05
15
125
0
+
×
06
15
126
0
+
×
07
15
127
0
+
×
08
15
128
0
+
×
09
15
129
0
+
×
10
15
130
0
+
×
20
11
15
131
0
+
×
12
15
132
0
+
×
13
15
133
0
+
×
14
15
134
0
+
×
15
15
135
0
+
×
16
15
136
0
+
×
17
15
137
0
+
×
21
18
15
138
0
+
×
19
15
139
0
+
×
20
15
140
0
+
×
21
15
141
0
+
×
22
15
142
0
+
×
23
15
143
0
+
×
24
15
144
0
+
×
22
25
15
145
0
+
×
26
15
146
0
+
×
27
15
147
0
+
×
28
15
148
0
Christi Himmelfahrt
+
×
29
15
149
0
+
×
30
15
150
0
+
×
31
15
151
0
+
×
23
June 1992
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
23
01
15
152
0
+
×
02
15
153
0
+
×
03
15
154
0
+
×
04
15
155
0
+
×
05
15
156
0
+
×
06
15
157
0
+
×
07
15
158
0
+
×
24
08
15
159
0
Pfingstmontag
+
×
09
15
160
0
+
×
10
15
161
0
+
×
11
15
162
0
+
×
12
15
163
0
+
×
13
15
164
0
+
×
14
15
165
0
+
×
25
15
15
166
0
+
×
16
15
167
0
+
×
17
15
168
0
+
×
18
15
169
0
Fronleichnam
+
×
19
15
170
0
+
×
20
15
171
0
+
×
21
15
172
0
+
×
26
22
15
173
0
+
×
23
15
174
0
+
×
24
15
175
0
+
×
25
15
176
0
+
×
26
15
177
0
+
×
27
15
178
0
+
×
28
15
179
0
+
×
27
29
15
180
0
+
×
30
15
181
0
+
×
28
July 1992
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
27
01
15
182
0
+
×
02
15
183
0
+
×
03
15
184
0
+
×
04
15
185
0
+
×
05
15
186
0
+
×
28
06
15
187
0
+
×
07
15
188
0
+
×
08
15
189
0
+
×
09
15
190
0
+
×
10
15
191
0
+
×
11
15
192
0
+
×
12
15
193
0
+
×
29
13
15
194
0
+
×
14
15
195
0
+
×
15
15
196
0
+
×
16
15
197
0
+
×
17
15
198
0
+
×
18
15
199
0
+
×
19
15
200
0
+
×
30
20
15
201
0
+
×
21
15
202
0
+
×
22
15
203
0
+
×
23
15
204
0
+
×
24
15
205
0
+
×
25
15
206
0
+
×
26
15
207
0
+
×
31
27
15
208
0
+
×
28
15
209
0
+
×
29
15
210
0
+
×
30
15
211
0
+
×
31
15
212
0
+
×
32
August 1992
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
31
01
15
213
0
+
×
02
15
214
0
+
×
32
03
15
215
0
+
×
04
15
216
0
+
×
05
15
217
0
+
×
06
15
218
0
+
×
07
15
219
0
+
×
08
15
220
0
+
×
09
15
221
0
+
×
33
10
15
222
0
+
×
11
15
223
0
+
×
12
15
224
0
+
×
13
15
225
0
+
×
14
15
226
0
+
×
15
15
227
0
Mariä Himmelfahrt
+
×
16
15
228
0
+
×
34
17
15
229
0
+
×
18
15
230
0
+
×
19
15
231
0
+
×
20
15
232
0
+
×
21
15
233
0
+
×
22
15
234
0
+
×
23
15
235
0
+
×
35
24
15
236
0
+
×
25
15
237
0
+
×
26
15
238
0
+
×
27
15
239
0
+
×
28
15
240
0
+
×
29
15
241
0
+
×
30
15
242
0
+
×
36
31
15
243
0
+
×
 
September 1992
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
36
01
15
244
0
+
×
02
15
245
0
+
×
03
15
246
0
+
×
04
15
247
0
+
×
05
15
248
0
+
×
06
15
249
0
+
×
37
07
15
250
0
+
×
08
15
251
0
+
×
09
15
252
0
+
×
10
15
253
0
+
×
11
15
254
0
+
×
12
15
255
0
+
×
13
15
256
0
+
×
38
14
15
257
0
+
×
15
15
258
0
+
×
16
15
259
0
+
×
17
15
260
0
+
×
18
15
261
0
+
×
19
15
262
0
+
×
20
15
263
0
+
×
39
21
15
264
0
+
×
22
15
265
0
+
×
23
15
266
0
+
×
24
15
267
0
+
×
25
15
268
0
+
×
26
15
269
0
+
×
27
15
270
0
+
×
40
28
15
271
0
+
×
29
15
272
0
+
×
30
15
273
0
+
×
41
October 1992
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
40
01
15
274
0
+
×
02
15
275
0
+
×
03
15
276
0
+
×
04
15
277
0
+
×
41
05
15
278
0
+
×
06
15
279
0
+
×
07
15
280
0
+
×
08
15
281
0
+
×
09
15
282
0
+
×
10
15
283
0
+
×
11
15
284
0
+
×
42
12
15
285
0
+
×
13
15
286
0
+
×
14
15
287
0
+
×
15
15
288
0
+
×
16
15
289
0
+
×
17
15
290
0
+
×
18
15
291
0
+
×
43
19
15
292
0
+
×
20
15
293
0
+
×
21
15
294
0
+
×
22
15
295
0
+
×
23
15
296
0
+
×
24
15
297
0
+
×
25
15
298
0
+
×
44
26
15
299
0
Nationalfeiertag
+
×
27
15
300
0
+
×
28
15
301
0
+
×
29
15
302
0
+
×
30
15
303
0
+
×
31
15
304
0
+
×
45
November 1992
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
44
01
15
305
0
Allerheiligen
+
×
45
02
15
306
0
+
×
03
15
307
0
+
×
04
15
308
0
+
×
05
15
309
0
+
×
06
15
310
0
+
×
07
15
311
0
+
×
08
15
312
0
+
×
46
09
15
313
0
+
×
10
15
314
0
+
×
11
15
315
0
+
×
12
15
316
0
+
×
13
15
317
0
+
×
14
15
318
0
+
×
15
15
319
0
+
×
47
16
15
320
0
+
×
17
15
321
0
+
×
18
15
322
0
+
×
19
15
323
0
+
×
20
15
324
0
+
×
21
15
325
0
+
×
22
15
326
0
+
×
48
23
15
327
0
+
×
24
15
328
0
+
×
25
15
329
0
+
×
26
15
330
0
+
×
27
15
331
0
+
×
28
15
332
0
+
×
29
15
333
0
+
×
49
30
15
334
0
+
×
December 1992
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
49
01
15
335
0
+
×
02
15
336
0
+
×
03
15
337
0
+
×
04
15
338
0
+
×
05
15
339
0
+
×
06
15
340
0
+
×
50
07
15
341
0
+
×
08
15
342
0
Mariä Empfängnis
+
×
09
15
343
0
+
×
10
15
344
0
+
×
11
15
345
0
+
×
12
15
346
0
+
×
13
15
347
0
+
×
51
14
15
348
0
+
×
15
15
349
0
+
×
16
15
350
0
+
×
17
15
351
0
+
×
18
15
352
0
+
×
19
15
353
0
+
×
20
15
354
0
+
×
52
21
15
355
0
+
×
22
15
356
0
+
×
23
15
357
0
+
×
24
15
358
0
+
×
25
15
359
0
Weihnachten
+
×
26
15
360
0
Stefanitag
+
×
27
15
361
0
+
×
53
28
15
362
0
+
×
29
15
363
0
+
×
30
15
364
0
+
×
31
15
365
0
+
×
01
 
January 1993
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
53
01
15
366
0
Neujahrstag
+
×
02
15
367
0
+
×
03
15
368
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:
?
Copy
×
From to
:
I have to be at work
I know I want to be on vacation
?
I let the optimizer decide