# Add Czech Republic Working Days

> Adds or subtracts Czech Republic authority-scope working days in exact coverage. Requires explicit mon_fri_planning; commemorative events do not create rest.

- Calculator id: `czech-public-add-working-days` · Category: Everyday Life (`everyday`) · Tool name: `add_cz_working_days`
- Canonical page: https://tttkmbb.com/everyday/czech-public-add-working-days · This document: https://tttkmbb.com/everyday/czech-public-add-working-days.md · JSON definition: https://tttkmbb.com/everyday/czech-public-add-working-days.json

## Purpose

Adds or subtracts Czech Republic authority-scope working days in exact coverage. Requires explicit mon_fri_planning; commemorative events do not create rest.

**Use when:** You need a deterministic Czech Republic working-day offset.

**Do not use when:** Czech Republic 2026 statutory rest-day facts over an explicitly selected Monday-Friday planning baseline. This is not a universal legal weekly roster. No shift, individual employer, bank/exchange, school, retail opening, payroll or legal-deadline schedule is computed. Commemorative days do not add rest; no substitute Monday is inferred. Future-year coverage is not asserted.

## Example user requests

- Add or subtract Czech Republic working days around Two names on January 1, one rest date.
- Add or subtract Czech Republic working days around Education commemorative day remains a planning workday.
- Add or subtract Czech Republic working days around November 17 is a Czech statutory rest day.


## Input

| Parameter | Type | Unit | Required | Description |
| --- | --- | --- | --- | --- |
| `start_date` | date |  | required | Gregorian start date in 2026-2026. |
| `working_days` | integer |  | required | Signed offset; start date excluded for non-zero offsets. (min -1000, max 1000) |
| `work_schedule` | enum: mon_fri_planning |  | required | Required explicit Monday-Friday planning baseline, not a statutory universal roster. |

## Output

| Field | Type | Unit | Description |
| --- | --- | --- | --- |
| `start_date` | date |  | Input date. |
| `result_date` | date |  | Date reached. |
| `working_days_added` | integer |  | Signed requested offset. |
| `calendar_days_elapsed` | integer |  | Signed Gregorian difference. |
| `public_holidays_skipped` | list |  | Exact events crossed. |
| `territory` | string |  | CZ (Czech Republic). |
| `territory_name` | string |  | Czech Republic |
| `day_type` | string |  | state_holiday, other_holiday, weekend_baseline or regular_workday; commemorations alone do not add rest. |
| `holiday_names` | string_list |  | Events applying on the date. |
| `holiday_kinds` | string_list |  | Authority event classifications. |
| `holiday_details` | list |  | Structured event details, including partial-day notes where published. |
| `calendar_scope` | string |  | Czech Republic 2026 statutory holidays with explicit Monday-Friday planning baseline |
| `holiday_policy` | string |  | Act_245_2000_sections_1_2_3_rest_section_4_commemorative |
| `substitute_day_policy` | string |  | No automatic substitute Monday inferred |
| `calendar_profile` | string |  | czech-public-holidays |
| `dataset_version` | string |  | cz-statutory-rest-calendar-2026.1 |
| `sources` | list |  | Authority and legislation sources. |
| `work_schedule` | string |  | Explicit mon_fri_planning baseline. |
| `is_state_holiday` | boolean |  | Whether result.date is a section 1 state holiday. |
| `is_other_holiday` | boolean |  | Whether result.date is a section 2 other holiday. |
| `is_statutory_holiday` | boolean |  | Whether result.date is a statutory holiday under section 1 or 2. |
| `is_commemorative_day` | boolean |  | Whether result.date has a section 4 event effective at that occurrence; does not add rest. |
| `payroll_scope` | string |  | Always not_computed. |

## Formula

`planning_workday = weekday AND no state_holiday AND no other_holiday`

Apply 13 unique 2026 holiday dates under Act 245/2000. Keep commemorative events separate, count January 1 once and never infer substitute dates or personal rosters.

## Data Sources

- MPSV: Act 245/2000, consolidated text — https://ppropo.mpsv.cz/zakon_245_2000 (official_legislation, retrieved 2026-09-29T08:09:02.517Z)
- MPSV: days of rest — https://ppropo.mpsv.cz/VIII83Dnypracovnihoklidu (government_guidance, retrieved 2026-09-29T08:09:02.876Z)
- Czech MFA London: Czech Public Holidays 2026 — https://mzv.gov.cz/london/en/visa_and_consular_information/czech_bank_holidays_2020/index.html (government_date_crosscheck, retrieved 2026-09-29T08:09:05.004Z)
- Czech Parliament: bill 78, Act 59/2026 — https://www.psp.cz/sqw/historie.sqw?o=10&snzp=1&t=78 (official_legislative_history, retrieved 2026-09-29T08:10:18.760Z)
- Act 59/2026: published Gazette document, epravo mirror — https://www.epravo.cz/_dataPublic/sbirky/2026/Sb_2026_59_PZZ.pdf (primary_gazette_document_mirror, retrieved 2026-09-29T08:12:08.936Z)

Data freshness: `static`. Pinned cz-statutory-rest-calendar-2026.1 package.

## API

- `GET https://tttkmbb.com/api/v1/calculate/czech-public-add-working-days?start_date=…&working_days=…&work_schedule=…`
- `POST https://tttkmbb.com/api/v1/calculate/czech-public-add-working-days` with JSON body `{"inputs": {…}}`
- Response: unified envelope (`success`, `request`, `result.values`, `result.units`, `sources`, `freshness`, `timestamp`, `next_actions`, `links`); see https://tttkmbb.com/docs/response-format.md
- Schema: https://tttkmbb.com/api/v1/calculators/czech-public-add-working-days · OpenAPI operationId `add_cz_working_days` in https://tttkmbb.com/openapi.json
- Authentication: none. Rate limit: fair use, see https://tttkmbb.com/docs/rate-limits.md.

## MCP

- Server: `https://tttkmbb.com/mcp` (Streamable HTTP, JSON-RPC 2.0, no auth)
- Tool:  `run_calculator` with `{"calculator_id": "czech-public-add-working-days", "inputs": {…}}`

## Example

- Zero offset is identity: inputs `{"start_date":"2026-01-01","working_days":0,"work_schedule":"mon_fri_planning"}` → `{"result_date":"2026-01-01","working_days_added":0}`

```
GET https://tttkmbb.com/api/v1/calculate/czech-public-add-working-days?start_date=2026-01-01&working_days=0&work_schedule=mon_fri_planning
```

## Limitations

Czech Republic 2026 statutory rest-day facts over an explicitly selected Monday-Friday planning baseline. This is not a universal legal weekly roster. No shift, individual employer, bank/exchange, school, retail opening, payroll or legal-deadline schedule is computed. Commemorative days do not add rest; no substitute Monday is inferred. Future-year coverage is not asserted. Apply 13 unique 2026 holiday dates under Act 245/2000. Keep commemorative events separate, count January 1 once and never infer substitute dates or personal rosters. All values are computed from the formula above; no measurement or live data is involved.

## FAQ

**Is Monday-Friday a mandatory schedule for everyone?**

No. Select mon_fri_planning explicitly. Individual work and rest rosters, night-shift day boundaries and exceptions are not computed.

**Do significant commemorative days create extra holidays?**

No. Section 4 does not add rest. March 30 Flag Day was added only from May 13, 2026 and is not retroactively included as a 2026 occurrence.

## Related

- [Czech Republic Working Day](https://tttkmbb.com/everyday/czech-public-working-day.md) — Inspect a date and source evidence.