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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 Denmark
Today, Thursday, 22 May, 2025

Working day : yes
Week : 21 / 52
Day of the year : 142 / 365
Working day of the year : 98 / 253
Time (UTC +01) : 11:43

Working days

EN | DA ▼
dss
South Korea
Canada
Japan
México
Colombia
Venezuela
Argentina
Chile
Australia
South Africa
New Zealand
Israel
Turkey
Portugal
Monaco
Greece
Luxembourg
Working days world map
Sweden
Norway
Finland
USA
France
United Kingdom & Ireland
Deutschland
Poland
Österreich
Schweiz
Italia
España
Russia
Ukraine
Netherlands
Belgique
Brasil
India
China
...
xxxx
From to
days:
working days:
weekend days:
custom dates:
public holidays:
Define a period
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From:
Morning
Afternoon
to:
Morning
Afternoon
Reminder
Reminder
▼
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 ()
May 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
18
19
20
21
22
15
0
0
+
×
23
15
1
0
+
×
24
15
2
0
+
×
25
15
3
0
+
×
22
26
15
4
0
+
×
27
15
5
0
+
×
28
15
6
0
+
×
29
15
7
0
Ascension Day
+
×
30
15
8
0
+
×
31
15
9
0
+
×
23
June 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
22
01
15
10
0
+
×
23
02
15
11
0
+
×
03
15
12
0
+
×
04
15
13
0
+
×
05
15
14
0
+
×
06
15
15
0
+
×
07
15
16
0
+
×
08
15
17
0
Pentecost
+
×
24
09
15
18
0
Whit Monday
+
×
10
15
19
0
+
×
11
15
20
0
+
×
12
15
21
0
+
×
13
15
22
0
+
×
14
15
23
0
+
×
15
15
24
0
+
×
25
16
15
25
0
+
×
17
15
26
0
+
×
18
15
27
0
+
×
19
15
28
0
+
×
20
15
29
0
+
×
21
15
30
0
+
×
22
15
31
0
+
×
26
23
15
32
0
+
×
24
15
33
0
+
×
25
15
34
0
+
×
26
15
35
0
+
×
27
15
36
0
+
×
28
15
37
0
+
×
29
15
38
0
+
×
27
30
15
39
0
+
×
July 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
27
01
15
40
0
+
×
02
15
41
0
+
×
03
15
42
0
+
×
04
15
43
0
+
×
05
15
44
0
+
×
06
15
45
0
+
×
28
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
+
×
29
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
+
×
30
21
15
60
0
+
×
22
15
61
0
+
×
23
15
62
0
+
×
24
15
63
0
+
×
25
15
64
0
+
×
26
15
65
0
+
×
27
15
66
0
+
×
31
28
15
67
0
+
×
29
15
68
0
+
×
30
15
69
0
+
×
31
15
70
0
+
×
32
August 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
31
01
15
71
0
+
×
02
15
72
0
+
×
03
15
73
0
+
×
32
04
15
74
0
+
×
05
15
75
0
+
×
06
15
76
0
+
×
07
15
77
0
+
×
08
15
78
0
+
×
09
15
79
0
+
×
10
15
80
0
+
×
33
11
15
81
0
+
×
12
15
82
0
+
×
13
15
83
0
+
×
14
15
84
0
+
×
15
15
85
0
+
×
16
15
86
0
+
×
17
15
87
0
+
×
34
18
15
88
0
+
×
19
15
89
0
+
×
20
15
90
0
+
×
21
15
91
0
+
×
22
15
92
0
+
×
23
15
93
0
+
×
24
15
94
0
+
×
35
25
15
95
0
+
×
26
15
96
0
+
×
27
15
97
0
+
×
28
15
98
0
+
×
29
15
99
0
+
×
30
15
100
0
+
×
31
15
101
0
+
×
36
 
September 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
36
01
15
102
0
+
×
02
15
103
0
+
×
03
15
104
0
+
×
04
15
105
0
+
×
05
15
106
0
+
×
06
15
107
0
+
×
07
15
108
0
+
×
37
08
15
109
0
+
×
09
15
110
0
+
×
10
15
111
0
+
×
11
15
112
0
+
×
12
15
113
0
+
×
13
15
114
0
+
×
14
15
115
0
+
×
38
15
15
116
0
+
×
16
15
117
0
+
×
17
15
118
0
+
×
18
15
119
0
+
×
19
15
120
0
+
×
20
15
121
0
+
×
21
15
122
0
+
×
39
22
15
123
0
+
×
23
15
124
0
+
×
24
15
125
0
+
×
25
15
126
0
+
×
26
15
127
0
+
×
27
15
128
0
+
×
28
15
129
0
+
×
40
29
15
130
0
+
×
30
15
131
0
+
×
41
October 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
40
01
15
132
0
+
×
02
15
133
0
+
×
03
15
134
0
+
×
04
15
135
0
+
×
05
15
136
0
+
×
41
06
15
137
0
+
×
07
15
138
0
+
×
08
15
139
0
+
×
09
15
140
0
+
×
10
15
141
0
+
×
11
15
142
0
+
×
12
15
143
0
+
×
42
13
15
144
0
+
×
14
15
145
0
+
×
15
15
146
0
+
×
16
15
147
0
+
×
17
15
148
0
+
×
18
15
149
0
+
×
19
15
150
0
+
×
43
20
15
151
0
+
×
21
15
152
0
+
×
22
15
153
0
+
×
23
15
154
0
+
×
24
15
155
0
+
×
25
15
156
0
+
×
26
15
157
0
+
×
44
27
15
158
0
+
×
28
15
159
0
+
×
29
15
160
0
+
×
30
15
161
0
+
×
31
15
162
0
+
×
45
November 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
44
01
15
163
0
+
×
02
15
164
0
+
×
45
03
15
165
0
+
×
04
15
166
0
+
×
05
15
167
0
+
×
06
15
168
0
+
×
07
15
169
0
+
×
08
15
170
0
+
×
09
15
171
0
+
×
46
10
15
172
0
+
×
11
15
173
0
+
×
12
15
174
0
+
×
13
15
175
0
+
×
14
15
176
0
+
×
15
15
177
0
+
×
16
15
178
0
+
×
47
17
15
179
0
+
×
18
15
180
0
+
×
19
15
181
0
+
×
20
15
182
0
+
×
21
15
183
0
+
×
22
15
184
0
+
×
23
15
185
0
+
×
48
24
15
186
0
+
×
25
15
187
0
+
×
26
15
188
0
+
×
27
15
189
0
+
×
28
15
190
0
+
×
29
15
191
0
+
×
30
15
192
0
+
×
49
December 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
49
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
+
×
50
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
+
×
51
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
+
×
52
22
15
214
0
+
×
23
15
215
0
+
×
24
15
216
0
+
×
25
15
217
0
Christmas Day
+
×
26
15
218
0
Boxing Day
+
×
27
15
219
0
+
×
28
15
220
0
+
×
01
29
15
221
0
+
×
30
15
222
0
+
×
31
15
223
0
+
×
02
 
January 2026
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
01
01
15
224
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