In Geopolis, we have seasons. Seasons usually last for about 1 month and the year starting date can vary based on the votes during map resets. Seasons have nicknames too, so that people can differentiate different seasons. The naming feature wasnt added until Signature V3.
Signature V1 - May 2023 / September 2023 (APROX) Signature V2 - 1st October 2023 / 23nd October 2023 (APROX) Signature 2.5 - 23nd October 2023 2023 / 15th November 2023 (APROX) End of the World - 15th November 2023 / 29th March 2025 Shin-Sengoku - 29th March 2025 / 20th April 2025 Signature V3 - 20th April 2025 / 20th May 2025 Signature V4 - 20th May 2025 / (Ongoing Season)