This Project Calendars Software Development document shows the complete working calendar for the ProjectAdm SaaS platform — covering all 28 two-week sprints from January 15, 2025 to February 28, 2026, with Brazilian and US public holidays, team PTO windows, milestone gate dates, and sprint review schedule. This Excel workbook was Eduardo Montes's primary tool for resource availability planning and sprint capacity adjustment throughout the 13.5-month development lifecycle.

What Are Project Calendars?

Project Calendars are a PMBOK 8 output in the Planning Performance Domain that identify the working days, shifts, and non-working periods (holidays, scheduled maintenance) that apply to the project schedule. They determine when schedule activities can be performed and inform the resource availability assumptions used in capacity planning. On international teams spanning multiple time zones and national holiday calendars, project calendars are especially important for accurate sprint capacity planning — a sprint that spans Carnaval in Brazil or Thanksgiving in the US has significantly reduced team availability that must be reflected in story point planning.

What This Project Calendars Software Development Includes

The ProjectAdm Project Calendars workbook contains three calendar views:

• Master Sprint Calendar (Sheet 1) — All 28 sprints listed with start/end dates, working days, capacity reduction notes, and milestone gates: Sprint 1 (Jan 15–28, 10 working days, full capacity); Sprint 5 (Mar 10–21, 9 working days — Carnaval -1 day); Sprint 13 (Jun 16–27, 9 working days — Corpus Christi Jun 19); Sprint 14 (Jun 30–Jul 11, 10 days); Sprint 17 (Aug 4–15, 10 days); Sprint 21 (Sep 29–Oct 10, 9 days — Dia das Crianças Oct 9); Sprint 26 (Dec 1–12, 9 days — Immaculate Conception Dec 8); Sprint 27 (Dec 15–26, 8 days — Christmas week); Sprint 28 (Jan 5–Feb 28, 2026, 40 days — final sprint extended for go-live readiness)
• Team Availability Calendar (Sheet 2) — Month-by-month availability grid for all 7 team members; PTO periods: Camila Rocha (Jul 14–18, 5 days — reduced Sprint 14 capacity by 20 SP); Henry Douglas (Aug 25–29, 5 days — Sprint 17 PO review sessions rescheduled); Lucas Park (Dec 22–Jan 2 — covered by pre-committed Sprint 27 QA work completed Sprint 26); total PTO impact: 24 working days across project, all absorbed without sprint replanning
• Milestone and Ceremony Calendar (Sheet 3) — All 28 sprint review dates (biweekly Fridays); 5 milestone gate dates (Jan 31, Apr 30, Jul 31, Oct 31, Feb 28); 5 milestone gate preparation sprints highlighted; 28 retrospective dates; 5 stakeholder report distribution dates (aligned with milestone gates); external penetration test scheduled Sprint 26 (Dec 1–5, 2025)
• Holiday Calendar — Brazilian public holidays applied to team members in Brazil: Carnaval (Mar 3–4), Tiradentes (Apr 21), Labor Day (May 1), Corpus Christi (Jun 19), Independence Day (Sep 7), Our Lady of Aparecida (Oct 12), Finados (Nov 2), Republic Day (Nov 15), Christmas (Dec 25); US holidays applied to Henry Douglas only: Memorial Day (May 26), Independence Day (Jul 4), Labor Day (Sep 1), Thanksgiving (Nov 27–28)
• Sprint Capacity Summary — Average sprint capacity: 9.6 working days per person (accounting for all holidays and PTO); lowest capacity sprint: Sprint 27 (8 days, Christmas week) — planned at 32 SP vs. normal 42 SP; highest capacity sprint: Sprint 22 (10 full days, no holidays/PTO) — delivered 48 SP

How Eduardo Montes Used This Project Calendars Software Development

Eduardo Montes used the Project Calendars Software Development workbook to adjust sprint story point targets in advance of every reduced-capacity sprint. For Sprint 27 (Christmas week, 8 working days), he reduced the sprint planning target from 42 SP to 32 SP — and the team delivered 34 SP (6% above target). This proactive capacity adjustment prevented the team from committing to full-velocity sprints during holiday periods and then failing to meet those commitments, which would have inflated the SPI metric and created false schedule variance.

How to Use This Project Calendars Software Development Document

When building your own Project Calendars Software Development document for an international team, create a separate holiday list for each country/region where team members are located, then merge them into the team availability grid. Missing a national holiday for a 3-person team can reduce a sprint's effective capacity by 30% — enough to cause a velocity dip that looks like a performance issue when it's actually a calendar planning gap.

Download the Template and Deepen Your Knowledge

Ready to create your own project calendars? Download the blank Project Calendars Template (PMBOK 8).

• Download the Project Calendars Template — PMBOK 8 (blank, ready to use)
• Read the full guide: Project Calendars in PMBOK 8

Want to go deeper? The PMBOK Guide 8th Edition is the definitive reference for modern project management. Get your copy and use it alongside these examples to build a solid, practical understanding of every performance domain.

Format: Microsoft Excel (.xlsx) | Project: Software Development (SaaS Platform) | PMBOK Edition: 8th (2025) | Domain: Planning