ANSWER (from own knowledge, Greek Code of Civil Procedure, KPolD, as in force October 2026)

Step 1 - Type of remedy and length of the period.
The judgment of the Multi-Member Court of First Instance is appealable (efeseis) before the Court of Appeal. Art. 518 par. 1 KPolD: the appeal is filed within 30 days from service of the judgment, when the appellant is resident in Greece (the 60-day period applies only to a party resident abroad or of unknown residence). The company is seated in Heraklion, so the period is 30 days. Art. 518 par. 2 (two years from publication, where the judgment was not served) does not apply, because the judgment was served on 16 July 2026. Publication on 2 July 2026 is therefore irrelevant to the count.

Step 2 - Starting point.
Service on Thursday 16 July 2026. Under art. 144 par. 1 KPolD (read with art. 240 and 241 of the Civil Code), the day of the event that triggers the period is not counted; counting starts on the following day.

Step 3 - Judicial vacation.
16 July 2026 falls inside the judicial vacation (1 July - 15 September; art. 143 KPolD). Under the KPolD rules on judicial vacations (art. 143-144, 147), a period for an ordinary remedy that would run during the vacation does not run during it: the vacation days are not counted and the period begins on 16 September 2026. The vacation is a suspension, so nothing of the 30 days was consumed between 17 July and 15 September.

Step 4 - Count of the 30 days.
Day 1 = 16 September 2026 (Wednesday); day 15 = 30 September; day 16 = 1 October; day 30 = 15 October 2026 (Thursday).

Step 5 - Weekend and holiday check.
15 October 2026 is a Thursday and not a public holiday, so no extension under art. 144 par. 3 KPolD (and art. 241 Civil Code) applies. 28 October is later and is not relevant.

Conclusion: the last day to file the appeal is Thursday 15 October 2026.

Caveat: I could not check the current text of the vacation provision here. The result depends on the vacation suspension, with 16 September counted as day 1; if the vacation rule did not apply and the period simply ran from 17 July, it would have expired on 15 August (a holiday), moving it to 17 August 2026.

RESULT: deadline = 2026-10-15; rule = Art. 518 par. 1 KPolD (30 days from service), with art. 144 par. 1 (day of service not counted) and the judicial-vacation rule (art. 143/147: period starts 16 September)
