Calendar weeks

Calendar Weeks

Keep track of all calendar weeks (CW) of the year. Ideal for project planning and quarter overviews.

-
Today
Public Holiday
Religious
Regional
School Vacations
Weekend

1st Quarter (Q1)

CWMoTuWeThFrSaSu
1
31
12
3
4
5
6
2
7
8
9
10
11
12
13
3
14
15
16
17
18
19
20
4
21
22
23
24
25
26
27
5
28
29
30
31
1
2
3
6
4
5
6
7
8
9
10
7
11
12
13
14
15
16
17
8
18
19
20
21
22
23
24
9
25
26
27
28
1
2
3
10
4
5
6
7
8
9
10
11
11
12
13
14
15
16
17
12
18
19
20
21
22
23
24
13
25
26
27
28
29
30
31

2nd Quarter (Q2)

CWMoTuWeThFrSaSu
14
1
2
3
4
5
6
7
15
8
9
10
11
12
13
14
16
15
16
17
18
19
20
21
17
22
23
24
25
26
27
28
18
29
30
1
2
3
4
5
19
6
7
8
9
10
11
12
20
13
14
15
16
17
18
19
21
20
21
22
23
24
25
26
22
27
28
29
30
31
1
2
23
3
4
5
6
7
8
9
24
10
11
12
13
14
15
16
25
17
18
19
20
21
22
23
26
24
25
26
27
28
29
30

3rd Quarter (Q3)

CWMoTuWeThFrSaSu
27
1
2
3
4
5
6
7
28
8
9
10
11
12
13
14
29
15
16
17
18
19
20
21
30
22
23
24
25
26
27
28
31
29
30
31
1
2
3
4
32
5
6
7
8
9
10
11
33
12
13
14
15
16
17
18
34
19
20
21
22
23
24
25
35
26
27
28
29
30
31
1
36
2
3
4
5
6
7
8
37
9
10
11
12
13
14
15
38
16
17
18
19
20
21
22
39
23
24
25
26
27
28
29
40
30
1
2
3
4
5
6

4th Quarter (Q4)

CWMoTuWeThFrSaSu
40
30
1
2
3
4
5
6
41
7
8
9
10
11
12
13
42
14
15
16
17
18
19
20
43
21
22
23
24
25
26
27
44
28
29
30
31
1
2
3
45
4
5
6
7
8
9
10
46
11
12
13
14
15
16
17
47
18
19
20
21
22
23
24
48
25
26
27
28
29
30
1
49
2
3
4
5
6
7
8
50
9
10
11
12
13
14
15
51
16
17
18
19
20
21
22
52
23
24
2526
27
28
29
1
30
31
1
2
3
4
5

Notes

Dates, deadlines, responsibilities or project notes.

Calendar weeks 1991: quarters, holidays and planning periods

In Switzerland, the ISO number coordinates teams, but the canton supplies the planning meaning. A cantonal holiday, an EDK-listed break or a local school schedule can alter staffing and travel within that week.

This overview follows the usual Monday-to-Sunday week structure and lets you filter by year, canton and quarter. Public holidays, religious days, regional holidays, school holidays, weekends and today are highlighted so you can spot interruptions before they affect schedules or travel plans.

Open the holiday planner once the canton is known and compare concrete holidays from work. Check the school holiday overview for EDK and local ranges, then subscribe or export that settled canton context.

Swiss calendar weeks by quarter

Quarter ranges, month blocks and planning focus in one compact view.

Quarter Months Calendar weeks Planning focus
Q1 January, February, March KW 01 - KW 13 Sports holidays and winter planning
Q2 April, May, June KW 14 - KW 26 Easter, spring holidays and Ascension
Q3 July, August, September KW 27 - KW 39 Summer holidays and school start
Q4 October, November, December KW 40 - KW 52/53 Autumn holidays and year-end planning
Projects

Compare working periods

Quarter and week views make delivery periods easier to compare than a month-only calendar.

Holidays

See interruptions early

Highlighted holidays show where normal working weeks are interrupted by national or regional days off.

PDF

Export the selected range

Export the selected year, canton and quarter range as a compact PDF with target URL and QR code.

Related planning pages

Open the date context behind week numbers

Calendar weeks become more useful when they are connected with school breaks, event pages and reusable calendar feeds.

Holiday planner Turn week context into leave days. Sports break Check regional sports-break weeks. Easter context Connect movable dates with weeks. Clock changes Spot the affected March and October weeks. Calendar subscription Keep week-relevant dates in your calendar. Data export Export dates for planning systems.
FAQ

Common questions about calendar weeks

Short answers about week numbers, cantons and holiday planning.

What is a calendar week?

A calendar week groups seven consecutive days and is commonly used for project planning, scheduling and business communication. In Switzerland, week-based planning usually starts on Monday.

Why filter by canton?

Regional holidays and school holidays can differ by canton. Filtering makes the week overview more precise for regional planning.

When should I use the holiday planner instead?

Choose the canton before marking holidays from work. The week view exposes cantonal dates; the planner then compares the working days around that exact local scope.

How do calendar weeks help with leave planning?

By displaying public holidays and school holidays alongside week numbers, you can quickly see which weeks contain holidays such as Ascension Day, Corpus Christi or Swiss National Day. That makes leave blocks and canton-specific days off easier to compare.

Data basis

Calendar data with official source anchors

ISO week numbers come from the selected year. Art. 20a scope and EDK school calendars determine the Swiss canton context shown beside them.

Labour Act Art. 20a EDK holiday calendar How we maintain this data