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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”
Assistant: I understand all languages.
Send
..in Luxembourg
| Calendrier civil usuel
Today, Thursday, 20 February, 2025

Working day : yes
Week : 08 / 52
Day of the year : 51 / 365
Working day of the year : 36 / 251
Time (UTC +01) : 17:05

Working days

EN | DE ▼
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Canada
Brasil
India
China
Israel
South Korea
Japan
México
Colombia
Venezuela
Argentina
Chile
Australia
South Africa
New Zealand
Monaco
Greece
Working days world map
USA
France
Deutschland
Poland
Österreich
Schweiz
Italia
Netherlands
Belgique
United Kingdom & Ireland
Russia
Ukraine
Sweden
Denmark
Norway
Finland
Turkey
España
Portugal
...
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 ()
February 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
05
06
07
08
20
15
0
0
+
×
21
15
1
0
+
×
22
15
2
0
+
×
23
15
3
0
+
×
09
24
15
4
0
+
×
25
15
5
0
+
×
26
15
6
0
+
×
27
15
7
0
+
×
28
15
8
0
+
×
10
March 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
09
01
15
9
0
+
×
02
15
10
0
+
×
10
03
15
11
0
+
×
04
15
12
0
+
×
05
15
13
0
+
×
06
15
14
0
+
×
07
15
15
0
+
×
08
15
16
0
+
×
09
15
17
0
+
×
11
10
15
18
0
+
×
11
15
19
0
+
×
12
15
20
0
+
×
13
15
21
0
+
×
14
15
22
0
+
×
15
15
23
0
+
×
16
15
24
0
+
×
12
17
15
25
0
+
×
18
15
26
0
+
×
19
15
27
0
+
×
20
15
28
0
+
×
21
15
29
0
+
×
22
15
30
0
+
×
23
15
31
0
+
×
13
24
15
32
0
+
×
25
15
33
0
+
×
26
15
34
0
+
×
27
15
35
0
+
×
28
15
36
0
+
×
29
15
37
0
+
×
30
15
38
0
+
×
14
31
15
39
0
+
×
April 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
14
01
15
40
0
+
×
02
15
41
0
+
×
03
15
42
0
+
×
04
15
43
0
+
×
05
15
44
0
+
×
06
15
45
0
+
×
15
07
15
46
0
+
×
08
15
47
0
+
×
09
15
48
0
+
×
10
15
49
0
+
×
11
15
50
0
+
×
12
15
51
0
+
×
13
15
52
0
+
×
16
14
15
53
0
+
×
15
15
54
0
+
×
16
15
55
0
+
×
17
15
56
0
+
×
18
15
57
0
+
×
19
15
58
0
+
×
20
15
59
0
+
×
17
21
15
60
0
Easter Monday
+
×
22
15
61
0
+
×
23
15
62
0
+
×
24
15
63
0
+
×
25
15
64
0
+
×
26
15
65
0
+
×
27
15
66
0
+
×
18
28
15
67
0
+
×
29
15
68
0
+
×
30
15
69
0
+
×
19
May 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
18
01
15
70
0
Labour Day
+
×
02
15
71
0
+
×
03
15
72
0
+
×
04
15
73
0
+
×
19
05
15
74
0
+
×
06
15
75
0
+
×
07
15
76
0
+
×
08
15
77
0
+
×
09
15
78
0
Europe Day
+
×
10
15
79
0
+
×
11
15
80
0
+
×
20
12
15
81
0
+
×
13
15
82
0
+
×
14
15
83
0
+
×
15
15
84
0
+
×
16
15
85
0
+
×
17
15
86
0
+
×
18
15
87
0
+
×
21
19
15
88
0
+
×
20
15
89
0
+
×
21
15
90
0
+
×
22
15
91
0
+
×
23
15
92
0
+
×
24
15
93
0
+
×
25
15
94
0
+
×
22
26
15
95
0
+
×
27
15
96
0
+
×
28
15
97
0
+
×
29
15
98
0
Ascension Day
+
×
30
15
99
0
+
×
31
15
100
0
+
×
23
 
June 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
22
01
15
101
0
+
×
23
02
15
102
0
+
×
03
15
103
0
+
×
04
15
104
0
+
×
05
15
105
0
+
×
06
15
106
0
+
×
07
15
107
0
+
×
08
15
108
0
+
×
24
09
15
109
0
Whit Monday
+
×
10
15
110
0
+
×
11
15
111
0
+
×
12
15
112
0
+
×
13
15
113
0
+
×
14
15
114
0
+
×
15
15
115
0
+
×
25
16
15
116
0
+
×
17
15
117
0
+
×
18
15
118
0
+
×
19
15
119
0
+
×
20
15
120
0
+
×
21
15
121
0
+
×
22
15
122
0
+
×
26
23
15
123
0
National Day
+
×
24
15
124
0
+
×
25
15
125
0
+
×
26
15
126
0
+
×
27
15
127
0
+
×
28
15
128
0
+
×
29
15
129
0
+
×
27
30
15
130
0
+
×
July 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
27
01
15
131
0
+
×
02
15
132
0
+
×
03
15
133
0
+
×
04
15
134
0
+
×
05
15
135
0
+
×
06
15
136
0
+
×
28
07
15
137
0
+
×
08
15
138
0
+
×
09
15
139
0
+
×
10
15
140
0
+
×
11
15
141
0
+
×
12
15
142
0
+
×
13
15
143
0
+
×
29
14
15
144
0
+
×
15
15
145
0
+
×
16
15
146
0
+
×
17
15
147
0
+
×
18
15
148
0
+
×
19
15
149
0
+
×
20
15
150
0
+
×
30
21
15
151
0
+
×
22
15
152
0
+
×
23
15
153
0
+
×
24
15
154
0
+
×
25
15
155
0
+
×
26
15
156
0
+
×
27
15
157
0
+
×
31
28
15
158
0
+
×
29
15
159
0
+
×
30
15
160
0
+
×
31
15
161
0
+
×
32
August 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
31
01
15
162
0
+
×
02
15
163
0
+
×
03
15
164
0
+
×
32
04
15
165
0
+
×
05
15
166
0
+
×
06
15
167
0
+
×
07
15
168
0
+
×
08
15
169
0
+
×
09
15
170
0
+
×
10
15
171
0
+
×
33
11
15
172
0
+
×
12
15
173
0
+
×
13
15
174
0
+
×
14
15
175
0
+
×
15
15
176
0
Assumption of Mary
+
×
16
15
177
0
+
×
17
15
178
0
+
×
34
18
15
179
0
+
×
19
15
180
0
+
×
20
15
181
0
+
×
21
15
182
0
+
×
22
15
183
0
+
×
23
15
184
0
+
×
24
15
185
0
+
×
35
25
15
186
0
+
×
26
15
187
0
+
×
27
15
188
0
+
×
28
15
189
0
+
×
29
15
190
0
+
×
30
15
191
0
+
×
31
15
192
0
+
×
36
September 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
36
01
15
193
0
+
×
02
15
194
0
+
×
03
15
195
0
+
×
04
15
196
0
+
×
05
15
197
0
+
×
06
15
198
0
+
×
07
15
199
0
+
×
37
08
15
200
0
+
×
09
15
201
0
+
×
10
15
202
0
+
×
11
15
203
0
+
×
12
15
204
0
+
×
13
15
205
0
+
×
14
15
206
0
+
×
38
15
15
207
0
+
×
16
15
208
0
+
×
17
15
209
0
+
×
18
15
210
0
+
×
19
15
211
0
+
×
20
15
212
0
+
×
21
15
213
0
+
×
39
22
15
214
0
+
×
23
15
215
0
+
×
24
15
216
0
+
×
25
15
217
0
+
×
26
15
218
0
+
×
27
15
219
0
+
×
28
15
220
0
+
×
40
29
15
221
0
+
×
30
15
222
0
+
×
41
 
October 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
40
01
15
223
0
+
×
02
15
224
0
+
×
03
15
225
0
+
×
04
15
226
0
+
×
05
15
227
0
+
×
41
06
15
228
0
+
×
07
15
229
0
+
×
08
15
230
0
+
×
09
15
231
0
+
×
10
15
232
0
+
×
11
15
233
0
+
×
12
15
234
0
+
×
42
13
15
235
0
+
×
14
15
236
0
+
×
15
15
237
0
+
×
16
15
238
0
+
×
17
15
239
0
+
×
18
15
240
0
+
×
19
15
241
0
+
×
43
20
15
242
0
+
×
21
15
243
0
+
×
22
15
244
0
+
×
23
15
245
0
+
×
24
15
246
0
+
×
25
15
247
0
+
×
26
15
248
0
+
×
44
27
15
249
0
+
×
28
15
250
0
+
×
29
15
251
0
+
×
30
15
252
0
+
×
31
15
253
0
+
×
45
November 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
44
01
15
254
0
All Saints' Day
+
×
02
15
255
0
+
×
45
03
15
256
0
+
×
04
15
257
0
+
×
05
15
258
0
+
×
06
15
259
0
+
×
07
15
260
0
+
×
08
15
261
0
+
×
09
15
262
0
+
×
46
10
15
263
0
+
×
11
15
264
0
+
×
12
15
265
0
+
×
13
15
266
0
+
×
14
15
267
0
+
×
15
15
268
0
+
×
16
15
269
0
+
×
47
17
15
270
0
+
×
18
15
271
0
+
×
19
15
272
0
+
×
20
15
273
0
+
×
21
15
274
0
+
×
22
15
275
0
+
×
23
15
276
0
+
×
48
24
15
277
0
+
×
25
15
278
0
+
×
26
15
279
0
+
×
27
15
280
0
+
×
28
15
281
0
+
×
29
15
282
0
+
×
30
15
283
0
+
×
49
December 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
49
01
15
284
0
+
×
02
15
285
0
+
×
03
15
286
0
+
×
04
15
287
0
+
×
05
15
288
0
+
×
06
15
289
0
+
×
07
15
290
0
+
×
50
08
15
291
0
+
×
09
15
292
0
+
×
10
15
293
0
+
×
11
15
294
0
+
×
12
15
295
0
+
×
13
15
296
0
+
×
14
15
297
0
+
×
51
15
15
298
0
+
×
16
15
299
0
+
×
17
15
300
0
+
×
18
15
301
0
+
×
19
15
302
0
+
×
20
15
303
0
+
×
21
15
304
0
+
×
52
22
15
305
0
+
×
23
15
306
0
+
×
24
15
307
0
+
×
25
15
308
0
Christmas Day
+
×
26
15
309
0
St. Stephen's Day
+
×
27
15
310
0
+
×
28
15
311
0
+
×
01
29
15
312
0
+
×
30
15
313
0
+
×
31
15
314
0
+
×
02
January 2026
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
01
01
15
315
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