STEP 1 - Which appeal period applies.
Art. 518 par. 1 of the Greek Code of Civil Procedure (KPolD): the appeal against a final first-instance judgment must be filed within thirty (30) days from service of the judgment, when it is served on the party. The 60-day period of art. 518 par. 2 applies only to a party residing abroad or of unknown residence; the company is seated in Heraklion, Crete, so the 30-day period applies. The alternative period that runs from publication when the judgment is not served (art. 518 par. 2, two years) is not relevant, because the judgment was served. Publication on 2 July 2026 therefore does not start the clock.

STEP 2 - Starting event.
Service on Thursday 16 July 2026 (art. 518 par. 1 KPolD).

STEP 3 - Start of the count.
Art. 144 par. 1 KPolD in conjunction with arts. 240 and 241 of the Civil Code (AK): a period counted in days starts on the day after the event; the day of service is not counted. Day 1 = Friday 17 July 2026.

STEP 4 - Counting 30 days.
Day 1 = 17 July; 17 July + 29 days = day 30. July has 31 days, so 17-31 July are days 1-15, and 1-15 August are days 16-30. Day 30 = Saturday 15 August 2026. Under art. 242 AK (read with art. 144 KPolD) a period in days ends at the end of its last day.

STEP 5 - Judicial vacation.
The judicial vacation (1 July - 15 September) does not suspend or extend this appeal period. I rely on art. 147 KPolD and on the way it is applied to appeal periods; I am less sure of its exact wording than of the other steps, so this step is the one most worth checking. The count therefore runs through July and August.

STEP 6 - Last day falls on a Saturday and a public holiday.
15 August 2026 is a Saturday and also a public holiday (Dormition of the Theotokos). Art. 243 AK (applied to procedural periods through art. 144 KPolD): if the last day of the period is a Sunday, another public holiday or a Saturday, the period expires at the end of the next day that is not a holiday. Sunday 16 August is a Sunday, so the next working day is Monday 17 August 2026.

CONCLUSION.
The appeal must be filed (lodged with the registry of the Court of Appeal of Crete, art. 495 and art. 518 KPolD) at the latest by the end of Monday 17 August 2026.

RESULT: deadline = 2026-08-17; rule = art. 518 par. 1 KPolD (30 days from service), counted under art. 144 KPolD and arts. 240-243 Civil Code (art. 243 AK extension from Saturday 15 Aug holiday to Monday 17 Aug)
