The Sumaran Era was a historical epoch on the planet Manussa during the reign of the Mara, which was known as the Sumaran Empire. Ambril studied artefacts from the Sumaran Era. One such artefact was the Six Faces of Delusion. (DW: Snakedance)
The Eighth Doctor steered the TARDIS towards the Jovian Fold at the Sumaran Era timeline 9235.3, planning to drop off his companion Charley Pollard for the Millennium Mardi-Gras: a thousand-year party to celebrate the billionth span of the Jovian civilisation. Troubles with the Time Lords and a time distortion caused by Anti-Time waylaid their passage. (BFA: Neverland)