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:
I have to be at work
I know I want to be on vacation
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I let the optimizer decide
Weekend days
Working days
Public holidays
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SAT-SUN
Country :
Calendar
School holidays :
Weekend days:
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
SAVE
The Holidays      ptimizer
It tells you when to take your days off to maximize the length of your vacation
 ▶
Optimize it
I would like to take
days off
from  
1 2 3 4 5 6 7 9 10 11 12
 to 
1 2 3 4 5 6 7 9 10 11 12
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 ()
September 2020
week
mon
tue
wed
thu
fri
sat
sun
36
37
38
16
15
0
0
+
×
17
15
1
0
+
×
18
15
2
0
+
×
19
15
3
0
+
×
20
15
4
0
+
×
39
21
15
5
0
+
×
22
15
6
0
+
×
23
15
7
0
+
×
24
15
8
0
+
×
25
15
9
0
+
×
26
15
10
0
+
×
27
15
11
0
+
×
40
28
15
12
0
+
×
29
15
13
0
+
×
30
15
14
0
Midautumn Festival D1
+
×
41
October 2020
week
mon
tue
wed
thu
fri
sat
sun
40
01
15
15
0
Midautumn Festival D2
+
×
02
15
16
0
Midautumn Festival D3
+
×
03
15
17
0
National Foundation Day
+
×
04
15
18
0
+
×
41
05
15
19
0
+
×
06
15
20
0
+
×
07
15
21
0
+
×
08
15
22
0
+
×
09
15
23
0
Hangeul Day
+
×
10
15
24
0
+
×
11
15
25
0
+
×
42
12
15
26
0
+
×
13
15
27
0
+
×
14
15
28
0
+
×
15
15
29
0
+
×
16
15
30
0
+
×
17
15
31
0
+
×
18
15
32
0
+
×
43
19
15
33
0
+
×
20
15
34
0
+
×
21
15
35
0
+
×
22
15
36
0
+
×
23
15
37
0
+
×
24
15
38
0
+
×
25
15
39
0
+
×
44
26
15
40
0
+
×
27
15
41
0
+
×
28
15
42
0
+
×
29
15
43
0
+
×
30
15
44
0
+
×
31
15
45
0
+
×
45
November 2020
week
mon
tue
wed
thu
fri
sat
sun
44
01
15
46
0
+
×
45
02
15
47
0
+
×
03
15
48
0
+
×
04
15
49
0
+
×
05
15
50
0
+
×
06
15
51
0
+
×
07
15
52
0
+
×
08
15
53
0
+
×
46
09
15
54
0
+
×
10
15
55
0
+
×
11
15
56
0
+
×
12
15
57
0
+
×
13
15
58
0
+
×
14
15
59
0
+
×
15
15
60
0
+
×
47
16
15
61
0
+
×
17
15
62
0
+
×
18
15
63
0
+
×
19
15
64
0
+
×
20
15
65
0
+
×
21
15
66
0
+
×
22
15
67
0
+
×
48
23
15
68
0
+
×
24
15
69
0
+
×
25
15
70
0
+
×
26
15
71
0
+
×
27
15
72
0
+
×
28
15
73
0
+
×
29
15
74
0
+
×
49
30
15
75
0
+
×
December 2020
week
mon
tue
wed
thu
fri
sat
sun
49
01
15
76
0
+
×
02
15
77
0
+
×
03
15
78
0
+
×
04
15
79
0
+
×
05
15
80
0
+
×
06
15
81
0
+
×
50
07
15
82
0
+
×
08
15
83
0
+
×
09
15
84
0
+
×
10
15
85
0
+
×
11
15
86
0
+
×
12
15
87
0
+
×
13
15
88
0
+
×
51
14
15
89
0
+
×
15
15
90
0
+
×
16
15
91
0
+
×
17
15
92
0
+
×
18
15
93
0
+
×
19
15
94
0
+
×
20
15
95
0
+
×
52
21
15
96
0
+
×
22
15
97
0
+
×
23
15
98
0
+
×
24
15
99
0
+
×
25
15
100
0
Christmas Day
+
×
26
15
101
0
+
×
27
15
102
0
+
×
53
28
15
103
0
+
×
29
15
104
0
+
×
30
15
105
0
+
×
31
15
106
0
+
×
01
 
January 2021
week
mon
tue
wed
thu
fri
sat
sun
53
01
15
107
0
New Year's Day
+
×
02
15
108
0
+
×
03
15
109
0
+
×
01
04
15
110
0
+
×
05
15
111
0
+
×
06
15
112
0
+
×
07
15
113
0
+
×
08
15
114
0
+
×
09
15
115
0
+
×
10
15
116
0
+
×
02
11
15
117
0
+
×
12
15
118
0
+
×
13
15
119
0
+
×
14
15
120
0
+
×
15
15
121
0
+
×
16
15
122
0
+
×
17
15
123
0
+
×
03
18
15
124
0
+
×
19
15
125
0
+
×
20
15
126
0
+
×
21
15
127
0
+
×
22
15
128
0
+
×
23
15
129
0
+
×
24
15
130
0
+
×
04
25
15
131
0
+
×
26
15
132
0
+
×
27
15
133
0
+
×
28
15
134
0
+
×
29
15
135
0
+
×
30
15
136
0
+
×
31
15
137
0
+
×
05
February 2021
week
mon
tue
wed
thu
fri
sat
sun
05
01
15
138
0
+
×
02
15
139
0
+
×
03
15
140
0
+
×
04
15
141
0
+
×
05
15
142
0
+
×
06
15
143
0
+
×
07
15
144
0
+
×
06
08
15
145
0
+
×
09
15
146
0
+
×
10
15
147
0
+
×
11
15
148
0
Korean New Year's Day1
+
×
12
15
149
0
Korean New Year's Day2
+
×
13
15
150
0
Korean New Year's Day3
+
×
14
15
151
0
+
×
07
15
15
152
0
+
×
16
15
153
0
+
×
17
15
154
0
+
×
18
15
155
0
+
×
19
15
156
0
+
×
20
15
157
0
+
×
21
15
158
0
+
×
08
22
15
159
0
+
×
23
15
160
0
+
×
24
15
161
0
+
×
25
15
162
0
+
×
26
15
163
0
+
×
27
15
164
0
+
×
28
15
165
0
+
×
09
10
March 2021
week
mon
tue
wed
thu
fri
sat
sun
09
01
15
166
0
Independence day
+
×
02
15
167
0
+
×
03
15
168
0
+
×
04
15
169
0
+
×
05
15
170
0
+
×
06
15
171
0
+
×
07
15
172
0
+
×
10
08
15
173
0
+
×
09
15
174
0
+
×
10
15
175
0
+
×
11
15
176
0
+
×
12
15
177
0
+
×
13
15
178
0
+
×
14
15
179
0
+
×
11
15
15
180
0
+
×
16
15
181
0
+
×
17
15
182
0
+
×
18
15
183
0
+
×
19
15
184
0
+
×
20
15
185
0
+
×
21
15
186
0
+
×
12
22
15
187
0
+
×
23
15
188
0
+
×
24
15
189
0
+
×
25
15
190
0
+
×
26
15
191
0
+
×
27
15
192
0
+
×
28
15
193
0
+
×
13
29
15
194
0
+
×
30
15
195
0
+
×
31
15
196
0
+
×
14
April 2021
week
mon
tue
wed
thu
fri
sat
sun
13
01
15
197
0
+
×
02
15
198
0
+
×
03
15
199
0
+
×
04
15
200
0
+
×
14
05
15
201
0
+
×
06
15
202
0
+
×
07
15
203
0
+
×
08
15
204
0
+
×
09
15
205
0
+
×
10
15
206
0
+
×
11
15
207
0
+
×
15
12
15
208
0
+
×
13
15
209
0
+
×
14
15
210
0
+
×
15
15
211
0
+
×
16
15
212
0
+
×
17
15
213
0
+
×
18
15
214
0
+
×
16
19
15
215
0
+
×
20
15
216
0
+
×
21
15
217
0
+
×
22
15
218
0
+
×
23
15
219
0
+
×
24
15
220
0
+
×
25
15
221
0
+
×
17
26
15
222
0
+
×
27
15
223
0
+
×
28
15
224
0
+
×
29
15
225
0
+
×
30
15
226
0
+
×
18
May 2021
week
mon
tue
wed
thu
fri
sat
sun
17
01
15
227
0
Labor Day
+
×
02
15
228
0
+
×
18
03
15
229
0
+
×
04
15
230
0
+
×
05
15
231
0
Children's Day
+
×
06
15
232
0
+
×
07
15
233
0
+
×
08
15
234
0
+
×
09
15
235
0
+
×
19
10
15
236
0
+
×
11
15
237
0
+
×
12
15
238
0
+
×
13
15
239
0
+
×
14
15
240
0
+
×
15
15
241
0
+
×
16
15
242
0
+
×
20
17
15
243
0
+
×
18
15
244
0
+
×
19
15
245
0
Buddha's Birthday
+
×
20
15
246
0
+
×
21
15
247
0
+
×
22
15
248
0
+
×
23
15
249
0
+
×
21
24
15
250
0
+
×
25
15
251
0
+
×
26
15
252
0
+
×
27
15
253
0
+
×
28
15
254
0
+
×
29
15
255
0
+
×
30
15
256
0
+
×
22
31
15
257
0
+
×
June 2021
week
mon
tue
wed
thu
fri
sat
sun
22
01
15
258
0
+
×
02
15
259
0
+
×
03
15
260
0
+
×
04
15
261
0
+
×
05
15
262
0
+
×
06
15
263
0
Memorial Day
+
×
23
07
15
264
0
+
×
08
15
265
0
+
×
09
15
266
0
+
×
10
15
267
0
+
×
11
15
268
0
+
×
12
15
269
0
+
×
13
15
270
0
+
×
24
14
15
271
0
+
×
15
15
272
0
+
×
16
15
273
0
+
×
17
15
274
0
+
×
18
15
275
0
+
×
19
15
276
0
+
×
20
15
277
0
+
×
25
21
15
278
0
+
×
22
15
279
0
+
×
23
15
280
0
+
×
24
15
281
0
+
×
25
15
282
0
+
×
26
15
283
0
+
×
27
15
284
0
+
×
26
28
15
285
0
+
×
29
15
286
0
+
×
30
15
287
0
+
×
27
July 2021
week
mon
tue
wed
thu
fri
sat
sun
26
01
15
288
0
+
×
02
15
289
0
+
×
03
15
290
0
+
×
04
15
291
0
+
×
27
05
15
292
0
+
×
06
15
293
0
+
×
07
15
294
0
+
×
08
15
295
0
+
×
09
15
296
0
+
×
10
15
297
0
+
×
11
15
298
0
+
×
28
12
15
299
0
+
×
13
15
300
0
+
×
14
15
301
0
+
×
15
15
302
0
+
×
16
15
303
0
+
×
17
15
304
0
Constitution Day
+
×
18
15
305
0
+
×
29
19
15
306
0
+
×
20
15
307
0
+
×
21
15
308
0
+
×
22
15
309
0
+
×
23
15
310
0
+
×
24
15
311
0
+
×
25
15
312
0
+
×
30
26
15
313
0
+
×
27
15
314
0
+
×
28
15
315
0
+
×
29
15
316
0
+
×
30
15
317
0
+
×
31
15
318
0
+
×
31
August 2021
week
mon
tue
wed
thu
fri
sat
sun
30
01
15
319
0
+
×
31
02
15
320
0
+
×
03
15
321
0
+
×
04
15
322
0
+
×
05
15
323
0
+
×
06
15
324
0
+
×
07
15
325
0
+
×
08
15
326
0
+
×
32
09
15
327
0
+
×
10
15
328
0
+
×
11
15
329
0
+
×
12
15
330
0
+
×
13
15
331
0
+
×
14
15
332
0
+
×
15
15
333
0
Liberation Day
+
×
33
16
15
334
0
+
×
17
15
335
0
+
×
18
15
336
0
+
×
19
15
337
0
+
×
20
15
338
0
+
×
21
15
339
0
+
×
22
15
340
0
+
×
34
23
15
341
0
+
×
24
15
342
0
+
×
25
15
343
0
+
×
26
15
344
0
+
×
27
15
345
0
+
×
28
15
346
0
+
×
29
15
347
0
+
×
35
30
15
348
0
+
×
31
15
349
0
+
×
September 2021
week
mon
tue
wed
thu
fri
sat
sun
35
01
15
350
0
+
×
02
15
351
0
+
×
03
15
352
0
+
×
04
15
353
0
+
×
05
15
354
0
+
×
36
06
15
355
0
+
×
07
15
356
0
+
×
08
15
357
0
+
×
09
15
358
0
+
×
10
15
359
0
+
×
11
15
360
0
+
×
12
15
361
0
+
×
37
13
15
362
0
+
×
14
15
363
0
+
×
15
15
364
0
+
×
16
15
365
0
+
×
38
39
40
 
Public holidays
Weekend days
Days to take
Holidays
Days to take:
You can now adjust the optimization by clicking on the calendar
Holidays length:
Optimization factor:
?
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