Ancient Solos Calendar (Historical Artifact)

A carved stone calendar from pre-imperial Solos, studied in Sondergaard's laboratory to uncover connections between historical records and Overlords' terraforming programs.

2 appearances

Significance

The calendar is the central physical clue connecting the Overlords' terraforming agenda to the Solonians' historical suffering. Its presence in Sondergaard's laboratory implies he has been studying pre-imperial Solonian records, possibly uncovering evidence that the radiation zones weren't accidental byproducts but calculated tools of control.

Appearances in the Narrative

When this object appears and how it's used

2 moments

S9E18 · The Mutants Part 4

Doctor deciphers the Solonian calendar

The ancient calendar slab becomes the focus of the Doctor's and Sondergaard's scrutiny, its concentric glyphs illuminated by flickering cave-light as they trace seasonal symbols and radiation markers. The Doctor’s realisation hinges on interpreting these markings as a 500-year calendar, linking the planet’s mutations to orbital mechanics and Overlord interference.

Before: Weathered stone slab bearing faded Solonian glyphs, set on Sondergaard’s cluttered workbench among scientific instruments

After: Identified as a 500-year calendar governed by thaesium radiation, now understood as a chronicle of oppression encoded into Solos’ geology

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S9E18 · The Mutants Part 4

Doctor risks radiation to claim gem

The Ancient Solos Calendar becomes the Doctor's Rosetta Stone, translating geological time into atmospheric crimes. Sondergaard and the Doctor lean over its surface as it unlocks the mystery of Solos' seasons and mutations, its markings pulsing subtly with radiation signatures that confirm the Doctor's suspicions.

Before: Cluttered on Sondergaard's workbench, its secrets partially deciphered

After: Held firmly by the Doctor as he moves toward the cave entrance, now a map to salvation or ruin

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