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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
..in Deutschland
| Berlin
Today, tuesday, 13 may, 2025

Working day : yes
Week : 20 / 52
Day of the year : 133 / 365
Working day of the year : 90 / 251
Time (UTC +01) : 08:38

Working days

CH | EN ▼
dss
Sweden
Denmark
Norway
Finland
Turkey
Portugal
Brasil
India
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
...
xxxx
From to
days :
working days :
week-end days :
custom dates :
public holidays :
school holidays:
Define a custom period
×
From:
Morning
Afternoon
to:
Morning
Afternoon
Reminder
Reminder
▼
make it periodic
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working hours
Working hours
/day
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salary
Salary
€
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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 ()
May 2025
week
mon
tue
wed
thu
fri
sat
sun
18
19
20
13
15
0
0
+
×
14
15
1
0
+
×
15
15
2
0
+
×
16
15
3
0
+
×
17
15
4
0
+
×
18
15
5
0
+
×
21
19
15
6
0
+
×
20
15
7
0
+
×
21
15
8
0
+
×
22
15
9
0
+
×
23
15
10
0
+
×
24
15
11
0
+
×
25
15
12
0
+
×
22
26
15
13
0
+
×
27
15
14
0
+
×
28
15
15
0
+
×
29
15
16
0
Christi Himmelfahrt
+
×
30
15
17
0
+
×
31
15
18
0
+
×
23
June 2025
week
mon
tue
wed
thu
fri
sat
sun
22
01
15
19
0
+
×
23
02
15
20
0
+
×
03
15
21
0
+
×
04
15
22
0
+
×
05
15
23
0
+
×
06
15
24
0
+
×
07
15
25
0
+
×
08
15
26
0
+
×
24
09
15
27
0
Pfingstmontag
+
×
10
15
28
0
+
×
11
15
29
0
+
×
12
15
30
0
+
×
13
15
31
0
+
×
14
15
32
0
+
×
15
15
33
0
+
×
25
16
15
34
0
+
×
17
15
35
0
+
×
18
15
36
0
+
×
19
15
37
0
+
×
20
15
38
0
+
×
21
15
39
0
+
×
22
15
40
0
+
×
26
23
15
41
0
+
×
24
15
42
0
+
×
25
15
43
0
+
×
26
15
44
0
+
×
27
15
45
0
+
×
28
15
46
0
+
×
29
15
47
0
+
×
27
30
15
48
0
+
×
July 2025
week
mon
tue
wed
thu
fri
sat
sun
27
01
15
49
0
+
×
02
15
50
0
+
×
03
15
51
0
+
×
04
15
52
0
+
×
05
15
53
0
+
×
06
15
54
0
+
×
28
07
15
55
0
+
×
08
15
56
0
+
×
09
15
57
0
+
×
10
15
58
0
+
×
11
15
59
0
+
×
12
15
60
0
+
×
13
15
61
0
+
×
29
14
15
62
0
+
×
15
15
63
0
+
×
16
15
64
0
+
×
17
15
65
0
+
×
18
15
66
0
+
×
19
15
67
0
+
×
20
15
68
0
+
×
30
21
15
69
0
+
×
22
15
70
0
+
×
23
15
71
0
+
×
24
15
72
0
+
×
25
15
73
0
+
×
26
15
74
0
+
×
27
15
75
0
+
×
31
28
15
76
0
+
×
29
15
77
0
+
×
30
15
78
0
+
×
31
15
79
0
+
×
32
August 2025
week
mon
tue
wed
thu
fri
sat
sun
31
01
15
80
0
+
×
02
15
81
0
+
×
03
15
82
0
+
×
32
04
15
83
0
+
×
05
15
84
0
+
×
06
15
85
0
+
×
07
15
86
0
+
×
08
15
87
0
+
×
09
15
88
0
+
×
10
15
89
0
+
×
33
11
15
90
0
+
×
12
15
91
0
+
×
13
15
92
0
+
×
14
15
93
0
+
×
15
15
94
0
+
×
16
15
95
0
+
×
17
15
96
0
+
×
34
18
15
97
0
+
×
19
15
98
0
+
×
20
15
99
0
+
×
21
15
100
0
+
×
22
15
101
0
+
×
23
15
102
0
+
×
24
15
103
0
+
×
35
25
15
104
0
+
×
26
15
105
0
+
×
27
15
106
0
+
×
28
15
107
0
+
×
29
15
108
0
+
×
30
15
109
0
+
×
31
15
110
0
+
×
36
 
September 2025
week
mon
tue
wed
thu
fri
sat
sun
36
01
15
111
0
+
×
02
15
112
0
+
×
03
15
113
0
+
×
04
15
114
0
+
×
05
15
115
0
+
×
06
15
116
0
+
×
07
15
117
0
+
×
37
08
15
118
0
+
×
09
15
119
0
+
×
10
15
120
0
+
×
11
15
121
0
+
×
12
15
122
0
+
×
13
15
123
0
+
×
14
15
124
0
+
×
38
15
15
125
0
+
×
16
15
126
0
+
×
17
15
127
0
+
×
18
15
128
0
+
×
19
15
129
0
+
×
20
15
130
0
+
×
21
15
131
0
+
×
39
22
15
132
0
+
×
23
15
133
0
+
×
24
15
134
0
+
×
25
15
135
0
+
×
26
15
136
0
+
×
27
15
137
0
+
×
28
15
138
0
+
×
40
29
15
139
0
+
×
30
15
140
0
+
×
41
October 2025
week
mon
tue
wed
thu
fri
sat
sun
40
01
15
141
0
+
×
02
15
142
0
+
×
03
15
143
0
Tag der Deutschen Einheit
+
×
04
15
144
0
+
×
05
15
145
0
+
×
41
06
15
146
0
+
×
07
15
147
0
+
×
08
15
148
0
+
×
09
15
149
0
+
×
10
15
150
0
+
×
11
15
151
0
+
×
12
15
152
0
+
×
42
13
15
153
0
+
×
14
15
154
0
+
×
15
15
155
0
+
×
16
15
156
0
+
×
17
15
157
0
+
×
18
15
158
0
+
×
19
15
159
0
+
×
43
20
15
160
0
+
×
21
15
161
0
+
×
22
15
162
0
+
×
23
15
163
0
+
×
24
15
164
0
+
×
25
15
165
0
+
×
26
15
166
0
+
×
44
27
15
167
0
+
×
28
15
168
0
+
×
29
15
169
0
+
×
30
15
170
0
+
×
31
15
171
0
+
×
45
November 2025
week
mon
tue
wed
thu
fri
sat
sun
44
01
15
172
0
+
×
02
15
173
0
+
×
45
03
15
174
0
+
×
04
15
175
0
+
×
05
15
176
0
+
×
06
15
177
0
+
×
07
15
178
0
+
×
08
15
179
0
+
×
09
15
180
0
+
×
46
10
15
181
0
+
×
11
15
182
0
+
×
12
15
183
0
+
×
13
15
184
0
+
×
14
15
185
0
+
×
15
15
186
0
+
×
16
15
187
0
+
×
47
17
15
188
0
+
×
18
15
189
0
+
×
19
15
190
0
+
×
20
15
191
0
+
×
21
15
192
0
+
×
22
15
193
0
+
×
23
15
194
0
+
×
48
24
15
195
0
+
×
25
15
196
0
+
×
26
15
197
0
+
×
27
15
198
0
+
×
28
15
199
0
+
×
29
15
200
0
+
×
30
15
201
0
+
×
49
December 2025
week
mon
tue
wed
thu
fri
sat
sun
49
01
15
202
0
+
×
02
15
203
0
+
×
03
15
204
0
+
×
04
15
205
0
+
×
05
15
206
0
+
×
06
15
207
0
+
×
07
15
208
0
+
×
50
08
15
209
0
+
×
09
15
210
0
+
×
10
15
211
0
+
×
11
15
212
0
+
×
12
15
213
0
+
×
13
15
214
0
+
×
14
15
215
0
+
×
51
15
15
216
0
+
×
16
15
217
0
+
×
17
15
218
0
+
×
18
15
219
0
+
×
19
15
220
0
+
×
20
15
221
0
+
×
21
15
222
0
+
×
52
22
15
223
0
+
×
23
15
224
0
+
×
24
15
225
0
+
×
25
15
226
0
Weihnachtstag
+
×
26
15
227
0
Zweiter Weihnachtsfeiertag
+
×
27
15
228
0
+
×
28
15
229
0
+
×
01
29
15
230
0
+
×
30
15
231
0
+
×
31
15
232
0
+
×
02
 
January 2026
week
mon
tue
wed
thu
fri
sat
sun
01
01
15
233
0
Neujahrstag
+
×
02
03
04
05
06
Public holidays
Week-end days
Days to take
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