The last day to file the appeal is **Tuesday, 15 September 2026**.

1. **Applicable period:** Because the company is seated in Greece and the final judgment was served on it, the appeal period is **30 days from service**. The service on 16 July controls the count, rather than publication on 2 July. [Greek Code of Civil Procedure (CPC), Article 518(1)–(2)](https://www.taxheaven.gr/law/5221/2025/arthro/43).
2. **First counted day:** The day of service is excluded. **17 July** is day 1. [CPC, Article 144(1)](https://www.nomoskopio.gr/kpold_144.php).
3. **July:** Counting 17–31 July inclusive gives **15 days**. [CPC, Articles 144(1) and 518(1)](https://www.nomoskopio.gr/kpold_144.php).
4. **August:** **1–31 August counts as zero days** for the Article 518(1) appeal period. [CPC, Article 147(2), as amended in 2026](https://www.aade.gr/sites/default/files/2026-05/fek_a_30-2026%20_.%205282-2026.pdf).
5. **September:** The remaining **15 days** are 1–15 September. Day 30 is Tuesday, **15 September**, so no extension for a non-working last day applies. [CPC, Articles 147(2) and 144(1)](https://www.aade.gr/sites/default/files/2026-05/fek_a_30-2026%20_.%205282-2026.pdf).

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