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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 Poland
| National public holidays, with observances from saturdays to mondays
Today, saturday, 26 april, 2025

Working day : no (week-end day)
Week : 17 / 52
Day of the year : 116 / 365
Working day of the year : 80 / 250
Time (UTC +01) : 20:17

Working days

GB | PL ▼
dss
South Korea
Canada
Italia
España
South Africa
New Zealand
Israel
Sweden
Denmark
Norway
Finland
Turkey
Portugal
Brasil
Greece
Luxembourg
Australia
Working days world map
Deutschland
Slovenia
Slovakia
Estonia
Croatia
Serbia
Romania
Bulgaria
Czech Republic
Russia
Ukraine
Turkey
France
Belarus
USA
Schweiz
Netherlands
Belgique
China
...
xxxx
From to
days :
working days :
week-end days :
custom dates :
public holidays :
Define a custom period
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From:
Morning
Afternoon
to:
Morning
Afternoon
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Reminder
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make it periodic
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
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 ()
April 2025
week
mon
tue
wed
thu
fri
sat
sun
14
15
16
17
26
15
0
0
+
×
27
15
1
0
+
×
18
28
15
2
0
+
×
29
15
3
0
+
×
30
15
4
0
+
×
19
May 2025
week
mon
tue
wed
thu
fri
sat
sun
18
01
15
5
0
Labour Day
+
×
02
15
6
0
+
×
03
15
7
0
Constitution Day
+
×
04
15
8
0
+
×
19
05
15
9
0
Constitution Day
+
×
06
15
10
0
+
×
07
15
11
0
+
×
08
15
12
0
+
×
09
15
13
0
+
×
10
15
14
0
+
×
11
15
15
0
+
×
20
12
15
16
0
+
×
13
15
17
0
+
×
14
15
18
0
+
×
15
15
19
0
+
×
16
15
20
0
+
×
17
15
21
0
+
×
18
15
22
0
+
×
21
19
15
23
0
+
×
20
15
24
0
+
×
21
15
25
0
+
×
22
15
26
0
+
×
23
15
27
0
+
×
24
15
28
0
+
×
25
15
29
0
+
×
22
26
15
30
0
+
×
27
15
31
0
+
×
28
15
32
0
+
×
29
15
33
0
+
×
30
15
34
0
+
×
31
15
35
0
+
×
23
June 2025
week
mon
tue
wed
thu
fri
sat
sun
22
01
15
36
0
+
×
23
02
15
37
0
+
×
03
15
38
0
+
×
04
15
39
0
+
×
05
15
40
0
+
×
06
15
41
0
+
×
07
15
42
0
+
×
08
15
43
0
Pentecost Sunday
+
×
24
09
15
44
0
+
×
10
15
45
0
+
×
11
15
46
0
+
×
12
15
47
0
+
×
13
15
48
0
+
×
14
15
49
0
+
×
15
15
50
0
+
×
25
16
15
51
0
+
×
17
15
52
0
+
×
18
15
53
0
+
×
19
15
54
0
Corpus Christi
+
×
20
15
55
0
+
×
21
15
56
0
+
×
22
15
57
0
+
×
26
23
15
58
0
+
×
24
15
59
0
+
×
25
15
60
0
+
×
26
15
61
0
+
×
27
15
62
0
+
×
28
15
63
0
+
×
29
15
64
0
+
×
27
30
15
65
0
+
×
July 2025
week
mon
tue
wed
thu
fri
sat
sun
27
01
15
66
0
+
×
02
15
67
0
+
×
03
15
68
0
+
×
04
15
69
0
+
×
05
15
70
0
+
×
06
15
71
0
+
×
28
07
15
72
0
+
×
08
15
73
0
+
×
09
15
74
0
+
×
10
15
75
0
+
×
11
15
76
0
+
×
12
15
77
0
+
×
13
15
78
0
+
×
29
14
15
79
0
+
×
15
15
80
0
+
×
16
15
81
0
+
×
17
15
82
0
+
×
18
15
83
0
+
×
19
15
84
0
+
×
20
15
85
0
+
×
30
21
15
86
0
+
×
22
15
87
0
+
×
23
15
88
0
+
×
24
15
89
0
+
×
25
15
90
0
+
×
26
15
91
0
+
×
27
15
92
0
+
×
31
28
15
93
0
+
×
29
15
94
0
+
×
30
15
95
0
+
×
31
15
96
0
+
×
32
 
August 2025
week
mon
tue
wed
thu
fri
sat
sun
31
01
15
97
0
+
×
02
15
98
0
+
×
03
15
99
0
+
×
32
04
15
100
0
+
×
05
15
101
0
+
×
06
15
102
0
+
×
07
15
103
0
+
×
08
15
104
0
+
×
09
15
105
0
+
×
10
15
106
0
+
×
33
11
15
107
0
+
×
12
15
108
0
+
×
13
15
109
0
+
×
14
15
110
0
+
×
15
15
111
0
Assumption
+
×
16
15
112
0
+
×
17
15
113
0
+
×
34
18
15
114
0
+
×
19
15
115
0
+
×
20
15
116
0
+
×
21
15
117
0
+
×
22
15
118
0
+
×
23
15
119
0
+
×
24
15
120
0
+
×
35
25
15
121
0
+
×
26
15
122
0
+
×
27
15
123
0
+
×
28
15
124
0
+
×
29
15
125
0
+
×
30
15
126
0
+
×
31
15
127
0
+
×
36
September 2025
week
mon
tue
wed
thu
fri
sat
sun
36
01
15
128
0
+
×
02
15
129
0
+
×
03
15
130
0
+
×
04
15
131
0
+
×
05
15
132
0
+
×
06
15
133
0
+
×
07
15
134
0
+
×
37
08
15
135
0
+
×
09
15
136
0
+
×
10
15
137
0
+
×
11
15
138
0
+
×
12
15
139
0
+
×
13
15
140
0
+
×
14
15
141
0
+
×
38
15
15
142
0
+
×
16
15
143
0
+
×
17
15
144
0
+
×
18
15
145
0
+
×
19
15
146
0
+
×
20
15
147
0
+
×
21
15
148
0
+
×
39
22
15
149
0
+
×
23
15
150
0
+
×
24
15
151
0
+
×
25
15
152
0
+
×
26
15
153
0
+
×
27
15
154
0
+
×
28
15
155
0
+
×
40
29
15
156
0
+
×
30
15
157
0
+
×
41
October 2025
week
mon
tue
wed
thu
fri
sat
sun
40
01
15
158
0
+
×
02
15
159
0
+
×
03
15
160
0
+
×
04
15
161
0
+
×
05
15
162
0
+
×
41
06
15
163
0
+
×
07
15
164
0
+
×
08
15
165
0
+
×
09
15
166
0
+
×
10
15
167
0
+
×
11
15
168
0
+
×
12
15
169
0
+
×
42
13
15
170
0
+
×
14
15
171
0
+
×
15
15
172
0
+
×
16
15
173
0
+
×
17
15
174
0
+
×
18
15
175
0
+
×
19
15
176
0
+
×
43
20
15
177
0
+
×
21
15
178
0
+
×
22
15
179
0
+
×
23
15
180
0
+
×
24
15
181
0
+
×
25
15
182
0
+
×
26
15
183
0
+
×
44
27
15
184
0
+
×
28
15
185
0
+
×
29
15
186
0
+
×
30
15
187
0
+
×
31
15
188
0
+
×
45
November 2025
week
mon
tue
wed
thu
fri
sat
sun
44
01
15
189
0
All Saints' Day
+
×
02
15
190
0
+
×
45
03
15
191
0
All Saints' Day
+
×
04
15
192
0
+
×
05
15
193
0
+
×
06
15
194
0
+
×
07
15
195
0
+
×
08
15
196
0
+
×
09
15
197
0
+
×
46
10
15
198
0
+
×
11
15
199
0
Independence Day
+
×
12
15
200
0
+
×
13
15
201
0
+
×
14
15
202
0
+
×
15
15
203
0
+
×
16
15
204
0
+
×
47
17
15
205
0
+
×
18
15
206
0
+
×
19
15
207
0
+
×
20
15
208
0
+
×
21
15
209
0
+
×
22
15
210
0
+
×
23
15
211
0
+
×
48
24
15
212
0
+
×
25
15
213
0
+
×
26
15
214
0
+
×
27
15
215
0
+
×
28
15
216
0
+
×
29
15
217
0
+
×
30
15
218
0
+
×
49
 
December 2025
week
mon
tue
wed
thu
fri
sat
sun
49
01
15
219
0
+
×
02
15
220
0
+
×
03
15
221
0
+
×
04
15
222
0
+
×
05
15
223
0
+
×
06
15
224
0
+
×
07
15
225
0
+
×
50
08
15
226
0
+
×
09
15
227
0
+
×
10
15
228
0
+
×
11
15
229
0
+
×
12
15
230
0
+
×
13
15
231
0
+
×
14
15
232
0
+
×
51
15
15
233
0
+
×
16
15
234
0
+
×
17
15
235
0
+
×
18
15
236
0
+
×
19
15
237
0
+
×
20
15
238
0
+
×
21
15
239
0
+
×
52
22
15
240
0
+
×
23
15
241
0
+
×
24
15
242
0
+
×
25
15
243
0
Christmas
+
×
26
15
244
0
Boxing Day
+
×
27
15
245
0
+
×
28
15
246
0
+
×
01
29
15
247
0
+
×
30
15
248
0
+
×
31
15
249
0
+
×
02
January 2026
week
mon
tue
wed
thu
fri
sat
sun
01
01
15
250
0
New Year's Day
+
×
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