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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.
Send

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..in France
| Bas-Rhin, Haut-Rhin, Moselle
Today, saturday, 2 august, 2025,
nous fêtons les Julien Eymard

Working day : no (week-end day)
Week : 31 / 52
Day of the year : 214 / 365
Working day of the year : 145 / 249
Time (UTC ++2) : 09:18

Working days

US | EN ▼
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South Africa
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Japan
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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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working days :
week-end days :
custom dates :
public holidays :
school holidays:
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to:
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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
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 ()
August 2025
week
mon
tue
wed
thu
fri
sat
sun
31
02
15
0
0
+
×
03
15
1
0
+
×
32
04
15
2
0
+
×
05
15
3
0
+
×
06
15
4
0
+
×
07
15
5
0
+
×
08
15
6
0
+
×
09
15
7
0
+
×
10
15
8
0
+
×
33
11
15
9
0
+
×
12
15
10
0
+
×
13
15
11
0
+
×
14
15
12
0
+
×
15
15
13
0
Assomption
+
×
16
15
14
0
+
×
17
15
15
0
+
×
34
18
15
16
0
+
×
19
15
17
0
+
×
20
15
18
0
+
×
21
15
19
0
+
×
22
15
20
0
+
×
23
15
21
0
+
×
24
15
22
0
+
×
35
25
15
23
0
+
×
26
15
24
0
+
×
27
15
25
0
+
×
28
15
26
0
+
×
29
15
27
0
+
×
30
15
28
0
+
×
31
15
29
0
+
×
36
September 2025
week
mon
tue
wed
thu
fri
sat
sun
36
01
15
30
0
+
×
02
15
31
0
+
×
03
15
32
0
+
×
04
15
33
0
+
×
05
15
34
0
+
×
06
15
35
0
+
×
07
15
36
0
+
×
37
08
15
37
0
+
×
09
15
38
0
+
×
10
15
39
0
+
×
11
15
40
0
+
×
12
15
41
0
+
×
13
15
42
0
+
×
14
15
43
0
+
×
38
15
15
44
0
+
×
16
15
45
0
+
×
17
15
46
0
+
×
18
15
47
0
+
×
19
15
48
0
+
×
20
15
49
0
+
×
21
15
50
0
+
×
39
22
15
51
0
+
×
23
15
52
0
+
×
24
15
53
0
+
×
25
15
54
0
+
×
26
15
55
0
+
×
27
15
56
0
+
×
28
15
57
0
+
×
40
29
15
58
0
+
×
30
15
59
0
+
×
41
October 2025
week
mon
tue
wed
thu
fri
sat
sun
40
01
15
60
0
+
×
02
15
61
0
+
×
03
15
62
0
+
×
04
15
63
0
+
×
05
15
64
0
+
×
41
06
15
65
0
+
×
07
15
66
0
+
×
08
15
67
0
+
×
09
15
68
0
+
×
10
15
69
0
+
×
11
15
70
0
+
×
12
15
71
0
+
×
42
13
15
72
0
+
×
14
15
73
0
+
×
15
15
74
0
+
×
16
15
75
0
+
×
17
15
76
0
+
×
18
15
77
0
+
×
19
15
78
0
+
×
43
20
15
79
0
+
×
21
15
80
0
+
×
22
15
81
0
+
×
23
15
82
0
+
×
24
15
83
0
+
×
25
15
84
0
+
×
26
15
85
0
+
×
44
27
15
86
0
+
×
28
15
87
0
+
×
29
15
88
0
+
×
30
15
89
0
+
×
31
15
90
0
+
×
45
November 2025
week
mon
tue
wed
thu
fri
sat
sun
44
01
15
91
0
Toussaint
+
×
02
15
92
0
+
×
45
03
15
93
0
+
×
04
15
94
0
+
×
05
15
95
0
+
×
06
15
96
0
+
×
07
15
97
0
+
×
08
15
98
0
+
×
09
15
99
0
+
×
46
10
15
100
0
+
×
11
15
101
0
Fête de l'Armistice
+
×
12
15
102
0
+
×
13
15
103
0
+
×
14
15
104
0
+
×
15
15
105
0
+
×
16
15
106
0
+
×
47
17
15
107
0
+
×
18
15
108
0
+
×
19
15
109
0
+
×
20
15
110
0
+
×
21
15
111
0
+
×
22
15
112
0
+
×
23
15
113
0
+
×
48
24
15
114
0
+
×
25
15
115
0
+
×
26
15
116
0
+
×
27
15
117
0
+
×
28
15
118
0
+
×
29
15
119
0
+
×
30
15
120
0
+
×
49
 
December 2025
week
mon
tue
wed
thu
fri
sat
sun
49
01
15
121
0
+
×
02
15
122
0
+
×
03
15
123
0
+
×
04
15
124
0
+
×
05
15
125
0
+
×
06
15
126
0
+
×
07
15
127
0
+
×
50
08
15
128
0
+
×
09
15
129
0
+
×
10
15
130
0
+
×
11
15
131
0
+
×
12
15
132
0
+
×
13
15
133
0
+
×
14
15
134
0
+
×
51
15
15
135
0
+
×
16
15
136
0
+
×
17
15
137
0
+
×
18
15
138
0
+
×
19
15
139
0
+
×
20
15
140
0
+
×
21
15
141
0
+
×
52
22
15
142
0
+
×
23
15
143
0
+
×
24
15
144
0
+
×
25
15
145
0
Noël
+
×
26
15
146
0
Saint Etienne
+
×
27
15
147
0
+
×
28
15
148
0
+
×
01
29
15
149
0
+
×
30
15
150
0
+
×
31
15
151
0
+
×
02
January 2026
week
mon
tue
wed
thu
fri
sat
sun
01
01
15
152
0
Jour de l'An
+
×
02
03
04
05
06
Public holidays
Week-end days
Days to take
Holidays
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