1. **Applicable appeal period:** The company is seated in Greece. Under CCP Article 518(1), the appeal period is **30 days** from service of the final judgment.

2. **Starting day:** Service was on 16 July 2026. Under Article 144(1), the period begins the following day, **17 July**. Because service was at the company’s own initiative, Article 144(2) provides that the service-triggered period also runs against the party who ordered service.

3. **Count the days:** 17–31 July count as **15 days**. Under Article 147(2), the period from 1 through 31 August is excluded for an Article 518(1) appeal. The remaining 15 days run from 1 September; day 30 is **15 September 2026**.

4. **Last-day adjustment:** 15 September 2026 is a Tuesday, so Article 144(1)’s rule extending a deadline that falls on a legally excluded day does not change the date.

[CCP Article 518(1)](https://deep-law.io/nomothesia-kodikas-politikis-dikonomias); [CCP Article 144(1)–(2)](https://www.nomoskopio.gr/kpold_144.php); [CCP Article 147(2)](https://www.nomoskopio.gr/kpold_147.php?printWindow=&toc=0)

RESULT: deadline = 2026-09-15; rule = CCP Article 518(1)