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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 France
| Calendrier civil
Today, Friday, 25 April, 2025,
nous fêtons les Marc

Working day : yes
Week : 17 / 52
Day of the year : 115 / 365
Working day of the year : 81 / 251
Time (UTC +01) : 09:47

Working days

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Norway
Finland
Israel
Turkey
Poland
Russia
Ukraine
Argentina
Chile
Australia
South Africa
South Korea
New Zealand
Japan
México
Colombia
Venezuela
Working days world map
USA
Deutschland
United Kingdom & Ireland
Italia
España
Brasil
India
China
Belgique
Canada
Schweiz
Monaco
Portugal
Netherlands
Österreich
Greece
Luxembourg
Sweden
Denmark
...
xxxx
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days:
working days:
weekend days:
custom dates:
public holidays:
school holidays:
Define a period
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Morning
Afternoon
to:
Morning
Afternoon
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make it periodic
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Contact
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 ()
April 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
14
15
16
17
25
15
0
0
+
×
26
15
1
0
+
×
27
15
2
0
+
×
18
28
15
3
0
+
×
29
15
4
0
+
×
30
15
5
0
+
×
19
May 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
18
01
15
6
0
Fête du Travail
+
×
02
15
7
0
+
×
03
15
8
0
+
×
04
15
9
0
+
×
19
05
15
10
0
+
×
06
15
11
0
+
×
07
15
12
0
+
×
08
15
13
0
Fête de la Victoire 45
+
×
09
15
14
0
+
×
10
15
15
0
+
×
11
15
16
0
+
×
20
12
15
17
0
+
×
13
15
18
0
+
×
14
15
19
0
+
×
15
15
20
0
+
×
16
15
21
0
+
×
17
15
22
0
+
×
18
15
23
0
+
×
21
19
15
24
0
+
×
20
15
25
0
+
×
21
15
26
0
+
×
22
15
27
0
+
×
23
15
28
0
+
×
24
15
29
0
+
×
25
15
30
0
+
×
22
26
15
31
0
+
×
27
15
32
0
+
×
28
15
33
0
+
×
29
15
34
0
Jeudi de l'Ascension
+
×
30
15
35
0
+
×
31
15
36
0
+
×
23
June 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
22
01
15
37
0
+
×
23
02
15
38
0
+
×
03
15
39
0
+
×
04
15
40
0
+
×
05
15
41
0
+
×
06
15
42
0
+
×
07
15
43
0
+
×
08
15
44
0
+
×
24
09
15
45
0
Lundi de la Pentecôte
+
×
10
15
46
0
+
×
11
15
47
0
+
×
12
15
48
0
+
×
13
15
49
0
+
×
14
15
50
0
+
×
15
15
51
0
+
×
25
16
15
52
0
+
×
17
15
53
0
+
×
18
15
54
0
+
×
19
15
55
0
+
×
20
15
56
0
+
×
21
15
57
0
+
×
22
15
58
0
+
×
26
23
15
59
0
+
×
24
15
60
0
+
×
25
15
61
0
+
×
26
15
62
0
+
×
27
15
63
0
+
×
28
15
64
0
+
×
29
15
65
0
+
×
27
30
15
66
0
+
×
July 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
27
01
15
67
0
+
×
02
15
68
0
+
×
03
15
69
0
+
×
04
15
70
0
+
×
05
15
71
0
+
×
06
15
72
0
+
×
28
07
15
73
0
+
×
08
15
74
0
+
×
09
15
75
0
+
×
10
15
76
0
+
×
11
15
77
0
+
×
12
15
78
0
+
×
13
15
79
0
+
×
29
14
15
80
0
Fête Nationale
+
×
15
15
81
0
+
×
16
15
82
0
+
×
17
15
83
0
+
×
18
15
84
0
+
×
19
15
85
0
+
×
20
15
86
0
+
×
30
21
15
87
0
+
×
22
15
88
0
+
×
23
15
89
0
+
×
24
15
90
0
+
×
25
15
91
0
+
×
26
15
92
0
+
×
27
15
93
0
+
×
31
28
15
94
0
+
×
29
15
95
0
+
×
30
15
96
0
+
×
31
15
97
0
+
×
32
 
August 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
31
01
15
98
0
+
×
02
15
99
0
+
×
03
15
100
0
+
×
32
04
15
101
0
+
×
05
15
102
0
+
×
06
15
103
0
+
×
07
15
104
0
+
×
08
15
105
0
+
×
09
15
106
0
+
×
10
15
107
0
+
×
33
11
15
108
0
+
×
12
15
109
0
+
×
13
15
110
0
+
×
14
15
111
0
+
×
15
15
112
0
Assomption
+
×
16
15
113
0
+
×
17
15
114
0
+
×
34
18
15
115
0
+
×
19
15
116
0
+
×
20
15
117
0
+
×
21
15
118
0
+
×
22
15
119
0
+
×
23
15
120
0
+
×
24
15
121
0
+
×
35
25
15
122
0
+
×
26
15
123
0
+
×
27
15
124
0
+
×
28
15
125
0
+
×
29
15
126
0
+
×
30
15
127
0
+
×
31
15
128
0
+
×
36
September 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
36
01
15
129
0
+
×
02
15
130
0
+
×
03
15
131
0
+
×
04
15
132
0
+
×
05
15
133
0
+
×
06
15
134
0
+
×
07
15
135
0
+
×
37
08
15
136
0
+
×
09
15
137
0
+
×
10
15
138
0
+
×
11
15
139
0
+
×
12
15
140
0
+
×
13
15
141
0
+
×
14
15
142
0
+
×
38
15
15
143
0
+
×
16
15
144
0
+
×
17
15
145
0
+
×
18
15
146
0
+
×
19
15
147
0
+
×
20
15
148
0
+
×
21
15
149
0
+
×
39
22
15
150
0
+
×
23
15
151
0
+
×
24
15
152
0
+
×
25
15
153
0
+
×
26
15
154
0
+
×
27
15
155
0
+
×
28
15
156
0
+
×
40
29
15
157
0
+
×
30
15
158
0
+
×
41
October 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
40
01
15
159
0
+
×
02
15
160
0
+
×
03
15
161
0
+
×
04
15
162
0
+
×
05
15
163
0
+
×
41
06
15
164
0
+
×
07
15
165
0
+
×
08
15
166
0
+
×
09
15
167
0
+
×
10
15
168
0
+
×
11
15
169
0
+
×
12
15
170
0
+
×
42
13
15
171
0
+
×
14
15
172
0
+
×
15
15
173
0
+
×
16
15
174
0
+
×
17
15
175
0
+
×
18
15
176
0
+
×
19
15
177
0
+
×
43
20
15
178
0
+
×
21
15
179
0
+
×
22
15
180
0
+
×
23
15
181
0
+
×
24
15
182
0
+
×
25
15
183
0
+
×
26
15
184
0
+
×
44
27
15
185
0
+
×
28
15
186
0
+
×
29
15
187
0
+
×
30
15
188
0
+
×
31
15
189
0
+
×
45
November 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
44
01
15
190
0
Toussaint
+
×
02
15
191
0
+
×
45
03
15
192
0
+
×
04
15
193
0
+
×
05
15
194
0
+
×
06
15
195
0
+
×
07
15
196
0
+
×
08
15
197
0
+
×
09
15
198
0
+
×
46
10
15
199
0
+
×
11
15
200
0
Fête de l'Armistice
+
×
12
15
201
0
+
×
13
15
202
0
+
×
14
15
203
0
+
×
15
15
204
0
+
×
16
15
205
0
+
×
47
17
15
206
0
+
×
18
15
207
0
+
×
19
15
208
0
+
×
20
15
209
0
+
×
21
15
210
0
+
×
22
15
211
0
+
×
23
15
212
0
+
×
48
24
15
213
0
+
×
25
15
214
0
+
×
26
15
215
0
+
×
27
15
216
0
+
×
28
15
217
0
+
×
29
15
218
0
+
×
30
15
219
0
+
×
49
 
December 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
49
01
15
220
0
+
×
02
15
221
0
+
×
03
15
222
0
+
×
04
15
223
0
+
×
05
15
224
0
+
×
06
15
225
0
+
×
07
15
226
0
+
×
50
08
15
227
0
+
×
09
15
228
0
+
×
10
15
229
0
+
×
11
15
230
0
+
×
12
15
231
0
+
×
13
15
232
0
+
×
14
15
233
0
+
×
51
15
15
234
0
+
×
16
15
235
0
+
×
17
15
236
0
+
×
18
15
237
0
+
×
19
15
238
0
+
×
20
15
239
0
+
×
21
15
240
0
+
×
52
22
15
241
0
+
×
23
15
242
0
+
×
24
15
243
0
+
×
25
15
244
0
Noël
+
×
26
15
245
0
+
×
27
15
246
0
+
×
28
15
247
0
+
×
01
29
15
248
0
+
×
30
15
249
0
+
×
31
15
250
0
+
×
02
January 2026
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
01
01
15
251
0
Jour de l'An
+
×
02
03
04
05
06
Public holidays
Weekend days
Days to take
Vacations
School holidays
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