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

1. **Start from service.** The judgment was served on 16 July. For an appellant seated in Greece, the appeal period is 30 days from service of the final judgment (Greek Code of Civil Procedure, **article 518 §1**). The publication date does not set the period here; the publication rule applies when the judgment has not been served (**article 518 §2**).
2. **Begin counting the next day.** The day of service is omitted, so 17 July is day 1 (**article 144 §1**). July 17–31 supplies **15 days**.
3. **Omit August.** August 1–31 does not count toward the appeal period under article 518 §1 (**article 147 §2**).
4. **Count the remaining 15 days.** September 1 is day 16; September 15 is day 30. That Tuesday is not a legally excluded day, so the last-day extension in **article 144 §1** does not apply.

RESULT: deadline = 2026-09-15; rule = article 518 §1, read with articles 144 §1 and 147 §2