Tuljabhavani Nidrakal is a holy period at the famous Tulja Bhavani Temple in Maharashtra . Tuljabhavani Nidrakal is from January 15, 2021 to January 21, 2021. It is observed from the first day of the Paush Shukla Paksha to the 8th day of the Paush Shukla Paksha as per traditional Hindu calendar followed in Maharashtra . It is from the Paush Shukla Paksha Pratipada to Ashtami.
She also goes into Nidra after Sharad Navratri from October 27, 2020 to October 31,2020 - (Ekadashi to Purnima).
Nidrakal is when the Goddess remains in cosmic sleep. Such periods are observed in certain Shakti Temples.
I am not aware whether the temple will remain closed during the period.