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Birthdays
Holidays optimizer
Define a custom 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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every
day
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| Brandenburg

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Today, saturday, 13 december, 2025

Working day :
Week : / 52
Day of the year : /
Working day of the year : /
Time (Europe/Berlin) : 12:55

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Denmark
Norway
Finland
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Brasil
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México
Colombia
Venezuela
Argentina
Chile
Japan
Monaco
Greece
Australia
Working days world map
USA
France
United Kingdom & Ireland
Österreich
Schweiz
Netherlands
Belgique
Luxembourg
China
Poland
South Korea
Canada
Italia
España
South Africa
New Zealand
Russia
Ukraine
Israel
...
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week-end days :
custom dates :
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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
between
and
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 2019
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
+
×
06
15
5
0
+
×
02
07
15
6
0
+
×
08
15
7
0
+
×
09
15
8
0
+
×
10
15
9
0
+
×
11
15
10
0
+
×
12
15
11
0
+
×
13
15
12
0
+
×
03
14
15
13
0
+
×
15
15
14
0
+
×
16
15
15
0
+
×
17
15
16
0
+
×
18
15
17
0
+
×
19
15
18
0
+
×
20
15
19
0
+
×
04
21
15
20
0
+
×
22
15
21
0
+
×
23
15
22
0
+
×
24
15
23
0
+
×
25
15
24
0
+
×
26
15
25
0
+
×
27
15
26
0
+
×
05
28
15
27
0
+
×
29
15
28
0
+
×
30
15
29
0
+
×
31
15
30
0
+
×
06
February 2019
week
mon
tue
wed
thu
fri
sat
sun
05
01
15
31
0
+
×
02
15
32
0
+
×
03
15
33
0
+
×
06
04
15
34
0
+
×
05
15
35
0
+
×
06
15
36
0
+
×
07
15
37
0
+
×
08
15
38
0
+
×
09
15
39
0
+
×
10
15
40
0
+
×
07
11
15
41
0
+
×
12
15
42
0
+
×
13
15
43
0
+
×
14
15
44
0
+
×
15
15
45
0
+
×
16
15
46
0
+
×
17
15
47
0
+
×
08
18
15
48
0
+
×
19
15
49
0
+
×
20
15
50
0
+
×
21
15
51
0
+
×
22
15
52
0
+
×
23
15
53
0
+
×
24
15
54
0
+
×
09
25
15
55
0
+
×
26
15
56
0
+
×
27
15
57
0
+
×
28
15
58
0
+
×
10
March 2019
week
mon
tue
wed
thu
fri
sat
sun
09
01
15
59
0
+
×
02
15
60
0
+
×
03
15
61
0
+
×
10
04
15
62
0
+
×
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
11
15
69
0
+
×
12
15
70
0
+
×
13
15
71
0
+
×
14
15
72
0
+
×
15
15
73
0
+
×
16
15
74
0
+
×
17
15
75
0
+
×
12
18
15
76
0
+
×
19
15
77
0
+
×
20
15
78
0
+
×
21
15
79
0
+
×
22
15
80
0
+
×
23
15
81
0
+
×
24
15
82
0
+
×
13
25
15
83
0
+
×
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 2019
week
mon
tue
wed
thu
fri
sat
sun
14
01
15
90
0
+
×
02
15
91
0
+
×
03
15
92
0
+
×
04
15
93
0
+
×
05
15
94
0
+
×
06
15
95
0
+
×
07
15
96
0
+
×
15
08
15
97
0
+
×
09
15
98
0
+
×
10
15
99
0
+
×
11
15
100
0
+
×
12
15
101
0
+
×
13
15
102
0
+
×
14
15
103
0
+
×
16
15
15
104
0
+
×
16
15
105
0
+
×
17
15
106
0
+
×
18
15
107
0
+
×
19
15
108
0
Karfreitag
+
×
20
15
109
0
+
×
21
15
110
0
+
×
17
22
15
111
0
Ostermontag
+
×
23
15
112
0
+
×
24
15
113
0
+
×
25
15
114
0
+
×
26
15
115
0
+
×
27
15
116
0
+
×
28
15
117
0
+
×
18
29
15
118
0
+
×
30
15
119
0
+
×
19
 
May 2019
week
mon
tue
wed
thu
fri
sat
sun
18
01
15
120
0
Tag der Arbeit
+
×
02
15
121
0
+
×
03
15
122
0
+
×
04
15
123
0
+
×
05
15
124
0
+
×
19
06
15
125
0
+
×
07
15
126
0
+
×
08
15
127
0
+
×
09
15
128
0
+
×
10
15
129
0
+
×
11
15
130
0
+
×
12
15
131
0
+
×
20
13
15
132
0
+
×
14
15
133
0
+
×
15
15
134
0
+
×
16
15
135
0
+
×
17
15
136
0
+
×
18
15
137
0
+
×
19
15
138
0
+
×
21
20
15
139
0
+
×
21
15
140
0
+
×
22
15
141
0
+
×
23
15
142
0
+
×
24
15
143
0
+
×
25
15
144
0
+
×
26
15
145
0
+
×
22
27
15
146
0
+
×
28
15
147
0
+
×
29
15
148
0
+
×
30
15
149
0
Christi Himmelfahrt
+
×
31
15
150
0
+
×
23
June 2019
week
mon
tue
wed
thu
fri
sat
sun
22
01
15
151
0
+
×
02
15
152
0
+
×
23
03
15
153
0
+
×
04
15
154
0
+
×
05
15
155
0
+
×
06
15
156
0
+
×
07
15
157
0
+
×
08
15
158
0
+
×
09
15
159
0
+
×
24
10
15
160
0
Pfingstmontag
+
×
11
15
161
0
+
×
12
15
162
0
+
×
13
15
163
0
+
×
14
15
164
0
+
×
15
15
165
0
+
×
16
15
166
0
+
×
25
17
15
167
0
+
×
18
15
168
0
+
×
19
15
169
0
+
×
20
15
170
0
+
×
21
15
171
0
+
×
22
15
172
0
+
×
23
15
173
0
+
×
26
24
15
174
0
+
×
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 2019
week
mon
tue
wed
thu
fri
sat
sun
27
01
15
181
0
+
×
02
15
182
0
+
×
03
15
183
0
+
×
04
15
184
0
+
×
05
15
185
0
+
×
06
15
186
0
+
×
07
15
187
0
+
×
28
08
15
188
0
+
×
09
15
189
0
+
×
10
15
190
0
+
×
11
15
191
0
+
×
12
15
192
0
+
×
13
15
193
0
+
×
14
15
194
0
+
×
29
15
15
195
0
+
×
16
15
196
0
+
×
17
15
197
0
+
×
18
15
198
0
+
×
19
15
199
0
+
×
20
15
200
0
+
×
21
15
201
0
+
×
30
22
15
202
0
+
×
23
15
203
0
+
×
24
15
204
0
+
×
25
15
205
0
+
×
26
15
206
0
+
×
27
15
207
0
+
×
28
15
208
0
+
×
31
29
15
209
0
+
×
30
15
210
0
+
×
31
15
211
0
+
×
32
August 2019
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
+
×
32
05
15
216
0
+
×
06
15
217
0
+
×
07
15
218
0
+
×
08
15
219
0
+
×
09
15
220
0
+
×
10
15
221
0
+
×
11
15
222
0
+
×
33
12
15
223
0
+
×
13
15
224
0
+
×
14
15
225
0
+
×
15
15
226
0
+
×
16
15
227
0
+
×
17
15
228
0
+
×
18
15
229
0
+
×
34
19
15
230
0
+
×
20
15
231
0
+
×
21
15
232
0
+
×
22
15
233
0
+
×
23
15
234
0
+
×
24
15
235
0
+
×
25
15
236
0
+
×
35
26
15
237
0
+
×
27
15
238
0
+
×
28
15
239
0
+
×
29
15
240
0
+
×
30
15
241
0
+
×
31
15
242
0
+
×
36
 
September 2019
week
mon
tue
wed
thu
fri
sat
sun
35
01
15
243
0
+
×
36
02
15
244
0
+
×
03
15
245
0
+
×
04
15
246
0
+
×
05
15
247
0
+
×
06
15
248
0
+
×
07
15
249
0
+
×
08
15
250
0
+
×
37
09
15
251
0
+
×
10
15
252
0
+
×
11
15
253
0
+
×
12
15
254
0
+
×
13
15
255
0
+
×
14
15
256
0
+
×
15
15
257
0
+
×
38
16
15
258
0
+
×
17
15
259
0
+
×
18
15
260
0
+
×
19
15
261
0
+
×
20
15
262
0
+
×
21
15
263
0
+
×
22
15
264
0
+
×
39
23
15
265
0
+
×
24
15
266
0
+
×
25
15
267
0
+
×
26
15
268
0
+
×
27
15
269
0
+
×
28
15
270
0
+
×
29
15
271
0
+
×
40
30
15
272
0
+
×
October 2019
week
mon
tue
wed
thu
fri
sat
sun
40
01
15
273
0
+
×
02
15
274
0
+
×
03
15
275
0
Tag der Deutschen Einheit
+
×
04
15
276
0
+
×
05
15
277
0
+
×
06
15
278
0
+
×
41
07
15
279
0
+
×
08
15
280
0
+
×
09
15
281
0
+
×
10
15
282
0
+
×
11
15
283
0
+
×
12
15
284
0
+
×
13
15
285
0
+
×
42
14
15
286
0
+
×
15
15
287
0
+
×
16
15
288
0
+
×
17
15
289
0
+
×
18
15
290
0
+
×
19
15
291
0
+
×
20
15
292
0
+
×
43
21
15
293
0
+
×
22
15
294
0
+
×
23
15
295
0
+
×
24
15
296
0
+
×
25
15
297
0
+
×
26
15
298
0
+
×
27
15
299
0
+
×
44
28
15
300
0
+
×
29
15
301
0
+
×
30
15
302
0
+
×
31
15
303
0
Reformationstag
+
×
45
November 2019
week
mon
tue
wed
thu
fri
sat
sun
44
01
15
304
0
+
×
02
15
305
0
+
×
03
15
306
0
+
×
45
04
15
307
0
+
×
05
15
308
0
+
×
06
15
309
0
+
×
07
15
310
0
+
×
08
15
311
0
+
×
09
15
312
0
+
×
10
15
313
0
+
×
46
11
15
314
0
+
×
12
15
315
0
+
×
13
15
316
0
+
×
14
15
317
0
+
×
15
15
318
0
+
×
16
15
319
0
+
×
17
15
320
0
+
×
47
18
15
321
0
+
×
19
15
322
0
+
×
20
15
323
0
+
×
21
15
324
0
+
×
22
15
325
0
+
×
23
15
326
0
+
×
24
15
327
0
+
×
48
25
15
328
0
+
×
26
15
329
0
+
×
27
15
330
0
+
×
28
15
331
0
+
×
29
15
332
0
+
×
30
15
333
0
+
×
49
December 2019
week
mon
tue
wed
thu
fri
sat
sun
48
01
15
334
0
+
×
49
02
15
335
0
+
×
03
15
336
0
+
×
04
15
337
0
+
×
05
15
338
0
+
×
06
15
339
0
+
×
07
15
340
0
+
×
08
15
341
0
+
×
50
09
15
342
0
+
×
10
15
343
0
+
×
11
15
344
0
+
×
12
15
345
0
+
×
13
15
346
0
+
×
14
15
347
0
+
×
15
15
348
0
+
×
51
16
15
349
0
+
×
17
15
350
0
+
×
18
15
351
0
+
×
19
15
352
0
+
×
20
15
353
0
+
×
21
15
354
0
+
×
22
15
355
0
+
×
52
23
15
356
0
+
×
24
15
357
0
+
×
25
15
358
0
Weihnachtstag
+
×
26
15
359
0
Zweiter Weihnachtsfeiertag
+
×
27
15
360
0
+
×
28
15
361
0
+
×
29
15
362
0
+
×
01
30
15
363
0
+
×
31
15
364
0
+
×
 
January 2020
week
mon
tue
wed
thu
fri
sat
sun
01
01
15
365
0
Neujahrstag
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Public holidays
Week-end days
Days to take
Holidays
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Holidays length:
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