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Birthdays
Holidays optimizer
Define a period
AI Assistant beta
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”
Assistant: I understand all languages.
Send
..in Greece
Today, Friday, 11 April, 2025

Working day : yes
Week : 15 / 52
Day of the year : 101 / 365
Working day of the year : 69 / 249
Time (UTC +02) : 07:27

Working days

EN | EL ▼
dss
Canada
Brasil
India
China
South Korea
Japan
México
Colombia
Venezuela
Argentina
Chile
Australia
South Africa
New Zealand
Monaco
Luxembourg
Belgique
Working days world map
USA
France
Deutschland
Poland
Österreich
Schweiz
Italia
Netherlands
United Kingdom & Ireland
Russia
Ukraine
Israel
Sweden
Denmark
Norway
Finland
Turkey
España
Portugal
...
xxxx
From to
days:
working days:
weekend days:
custom dates:
public holidays:
Define a period
×
From:
Morning
Afternoon
to:
Morning
Afternoon
Reminder
Reminder
▼
make it periodic
make it periodic
Description
work hours
Work hours
/day
▼
Teleworking
wages
Wages
€
▼
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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
11
15
0
0
+
×
12
15
1
0
+
×
13
15
2
0
+
×
16
14
15
3
0
+
×
15
15
4
0
+
×
16
15
5
0
+
×
17
15
6
0
+
×
18
15
7
0
Μεγάλη Παρασκευή
+
×
19
15
8
0
+
×
20
15
9
0
Ορθόδοξο Πάσχα
+
×
17
21
15
10
0
Δευτέρα του Πάσχα
+
×
22
15
11
0
+
×
23
15
12
0
+
×
24
15
13
0
+
×
25
15
14
0
+
×
26
15
15
0
+
×
27
15
16
0
+
×
18
28
15
17
0
+
×
29
15
18
0
+
×
30
15
19
0
+
×
19
May 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
18
01
15
20
0
Εργατική Πρωτομαγιά
+
×
02
15
21
0
+
×
03
15
22
0
+
×
04
15
23
0
+
×
19
05
15
24
0
+
×
06
15
25
0
+
×
07
15
26
0
+
×
08
15
27
0
+
×
09
15
28
0
+
×
10
15
29
0
+
×
11
15
30
0
+
×
20
12
15
31
0
+
×
13
15
32
0
+
×
14
15
33
0
+
×
15
15
34
0
+
×
16
15
35
0
+
×
17
15
36
0
+
×
18
15
37
0
+
×
21
19
15
38
0
+
×
20
15
39
0
+
×
21
15
40
0
+
×
22
15
41
0
+
×
23
15
42
0
+
×
24
15
43
0
+
×
25
15
44
0
+
×
22
26
15
45
0
+
×
27
15
46
0
+
×
28
15
47
0
+
×
29
15
48
0
+
×
30
15
49
0
+
×
31
15
50
0
+
×
23
June 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
22
01
15
51
0
+
×
23
02
15
52
0
+
×
03
15
53
0
+
×
04
15
54
0
+
×
05
15
55
0
+
×
06
15
56
0
+
×
07
15
57
0
+
×
08
15
58
0
Πεντηκοστή
+
×
24
09
15
59
0
Δευτέρα Πεντηκοστής
+
×
10
15
60
0
+
×
11
15
61
0
+
×
12
15
62
0
+
×
13
15
63
0
+
×
14
15
64
0
+
×
15
15
65
0
+
×
25
16
15
66
0
+
×
17
15
67
0
+
×
18
15
68
0
+
×
19
15
69
0
+
×
20
15
70
0
+
×
21
15
71
0
+
×
22
15
72
0
+
×
26
23
15
73
0
+
×
24
15
74
0
+
×
25
15
75
0
+
×
26
15
76
0
+
×
27
15
77
0
+
×
28
15
78
0
+
×
29
15
79
0
+
×
27
30
15
80
0
+
×
July 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
27
01
15
81
0
+
×
02
15
82
0
+
×
03
15
83
0
+
×
04
15
84
0
+
×
05
15
85
0
+
×
06
15
86
0
+
×
28
07
15
87
0
+
×
08
15
88
0
+
×
09
15
89
0
+
×
10
15
90
0
+
×
11
15
91
0
+
×
12
15
92
0
+
×
13
15
93
0
+
×
29
14
15
94
0
+
×
15
15
95
0
+
×
16
15
96
0
+
×
17
15
97
0
+
×
18
15
98
0
+
×
19
15
99
0
+
×
20
15
100
0
+
×
30
21
15
101
0
+
×
22
15
102
0
+
×
23
15
103
0
+
×
24
15
104
0
+
×
25
15
105
0
+
×
26
15
106
0
+
×
27
15
107
0
+
×
31
28
15
108
0
+
×
29
15
109
0
+
×
30
15
110
0
+
×
31
15
111
0
+
×
32
 
August 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
31
01
15
112
0
+
×
02
15
113
0
+
×
03
15
114
0
+
×
32
04
15
115
0
+
×
05
15
116
0
+
×
06
15
117
0
+
×
07
15
118
0
+
×
08
15
119
0
+
×
09
15
120
0
+
×
10
15
121
0
+
×
33
11
15
122
0
+
×
12
15
123
0
+
×
13
15
124
0
+
×
14
15
125
0
+
×
15
15
126
0
Κοίμηση της Θεοτόκου
+
×
16
15
127
0
+
×
17
15
128
0
+
×
34
18
15
129
0
+
×
19
15
130
0
+
×
20
15
131
0
+
×
21
15
132
0
+
×
22
15
133
0
+
×
23
15
134
0
+
×
24
15
135
0
+
×
35
25
15
136
0
+
×
26
15
137
0
+
×
27
15
138
0
+
×
28
15
139
0
+
×
29
15
140
0
+
×
30
15
141
0
+
×
31
15
142
0
+
×
36
September 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
36
01
15
143
0
+
×
02
15
144
0
+
×
03
15
145
0
+
×
04
15
146
0
+
×
05
15
147
0
+
×
06
15
148
0
+
×
07
15
149
0
+
×
37
08
15
150
0
+
×
09
15
151
0
+
×
10
15
152
0
+
×
11
15
153
0
+
×
12
15
154
0
+
×
13
15
155
0
+
×
14
15
156
0
+
×
38
15
15
157
0
+
×
16
15
158
0
+
×
17
15
159
0
+
×
18
15
160
0
+
×
19
15
161
0
+
×
20
15
162
0
+
×
21
15
163
0
+
×
39
22
15
164
0
+
×
23
15
165
0
+
×
24
15
166
0
+
×
25
15
167
0
+
×
26
15
168
0
+
×
27
15
169
0
+
×
28
15
170
0
+
×
40
29
15
171
0
+
×
30
15
172
0
+
×
41
October 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
40
01
15
173
0
+
×
02
15
174
0
+
×
03
15
175
0
+
×
04
15
176
0
+
×
05
15
177
0
+
×
41
06
15
178
0
+
×
07
15
179
0
+
×
08
15
180
0
+
×
09
15
181
0
+
×
10
15
182
0
+
×
11
15
183
0
+
×
12
15
184
0
+
×
42
13
15
185
0
+
×
14
15
186
0
+
×
15
15
187
0
+
×
16
15
188
0
+
×
17
15
189
0
+
×
18
15
190
0
+
×
19
15
191
0
+
×
43
20
15
192
0
+
×
21
15
193
0
+
×
22
15
194
0
+
×
23
15
195
0
+
×
24
15
196
0
+
×
25
15
197
0
+
×
26
15
198
0
+
×
44
27
15
199
0
+
×
28
15
200
0
Ημέρα του Όχι
+
×
29
15
201
0
+
×
30
15
202
0
+
×
31
15
203
0
+
×
45
November 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
44
01
15
204
0
+
×
02
15
205
0
+
×
45
03
15
206
0
+
×
04
15
207
0
+
×
05
15
208
0
+
×
06
15
209
0
+
×
07
15
210
0
+
×
08
15
211
0
+
×
09
15
212
0
+
×
46
10
15
213
0
+
×
11
15
214
0
+
×
12
15
215
0
+
×
13
15
216
0
+
×
14
15
217
0
+
×
15
15
218
0
+
×
16
15
219
0
+
×
47
17
15
220
0
+
×
18
15
221
0
+
×
19
15
222
0
+
×
20
15
223
0
+
×
21
15
224
0
+
×
22
15
225
0
+
×
23
15
226
0
+
×
48
24
15
227
0
+
×
25
15
228
0
+
×
26
15
229
0
+
×
27
15
230
0
+
×
28
15
231
0
+
×
29
15
232
0
+
×
30
15
233
0
+
×
49
 
December 2025
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
49
01
15
234
0
+
×
02
15
235
0
+
×
03
15
236
0
+
×
04
15
237
0
+
×
05
15
238
0
+
×
06
15
239
0
+
×
07
15
240
0
+
×
50
08
15
241
0
+
×
09
15
242
0
+
×
10
15
243
0
+
×
11
15
244
0
+
×
12
15
245
0
+
×
13
15
246
0
+
×
14
15
247
0
+
×
51
15
15
248
0
+
×
16
15
249
0
+
×
17
15
250
0
+
×
18
15
251
0
+
×
19
15
252
0
+
×
20
15
253
0
+
×
21
15
254
0
+
×
52
22
15
255
0
+
×
23
15
256
0
+
×
24
15
257
0
+
×
25
15
258
0
Χριστούγεννα
+
×
26
15
259
0
Σύναξη της Θεοτόκου
+
×
27
15
260
0
+
×
28
15
261
0
+
×
01
29
15
262
0
+
×
30
15
263
0
+
×
31
15
264
0
+
×
02
January 2026
week
Mon
Tue
Wed
Thu
Fri
Sat
Sun
01
01
15
265
0
Πρωτοχρονιά
+
×
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