1. The company is in Greece, so the appeal period is **30 days from service**: Article 518(1) CCP. Because the company arranged service, that period runs against it too: Article 144(2) CCP. ([Article 518](https://www.nomoskopio.gr/kpold_518.php), [Article 144](https://www.nomoskopio.gr/kpold_144.php))

2. Service was on **Thursday, 16 July 2026**. The service date is excluded; counting starts the next day, **Friday, 17 July**, as day 1: Article 144(1) CCP.

3. **17–31 July = 15 days**. The period from **1 through 31 August is not counted** for an appeal deadline under Article 518(1): Article 147(2) CCP, as in force after Law 5282/2026, Article 15. ([Law 5282/2026, Article 15](https://www.aade.gr/sites/default/files/2026-05/fek_a_30-2026%20_.%205282-2026.pdf))

4. Counting resumes on **1 September**: 1–15 September supplies the remaining 15 days, making **Tuesday, 15 September 2026** day 30. The appeal can be filed through 7 p.m. that day under Article 144(1) CCP.

RESULT: deadline = 2026-09-15; rule = Articles 518(1), 144(1)–(2), 147(2) CCP