All completed dossiers
Revealed daily file

Dossier №289

Friday, October 16, 2026

  1. 01

    1,989 AD

    The oil tanker Exxon Valdez strikes Bligh Reef in Alaska's Prince William Sound.

    This question uses 1989 AD as its sourced chronological anchor.

    Crude oil escaped into coastal waters, causing severe environmental damage.

  2. 02

    1,973 AD

    Egyptian and Syrian forces attack Israeli positions in the Sinai and Golan Heights.

    This question uses 1973 AD as its sourced chronological anchor.

    The offensive began on Yom Kippur and led to fighting on both fronts before ceasefire agreements took hold.

  3. 03

    1,910 AD

    An armed uprising against Porfirio Díaz begins the Mexican Revolution.

    This question uses 1910 AD as its sourced chronological anchor.

    The struggle against Díaz developed into years of conflict among rival revolutionary movements and governments.

  4. 04

    1,569 AD

    Gerardus Mercator issues a world map using the projection that bears his name.

    This question uses 1569 AD as its sourced chronological anchor.

    Its treatment of compass bearings offered navigators a different way to represent the curved Earth on a flat sheet.

  5. 05

    430 BC

    A devastating epidemic reaches Athens during the Peloponnesian War.

    This question uses 430 BC as its sourced chronological anchor.

    The outbreak struck the crowded city and continued in successive waves; its precise pathogen remains debated.