FCRA registration validity extended to preserve continuity during transition to the amended legal regime and pending renewals. Registration certificates under the Foreign Contribution (Regulation) Act, 2010 that were expiring during the transitional period and await renewal are declared valid until 31st December, 2021 to ensure smooth transition to the amended regime; the extension is issued in public interest under the Central Government's power under section 50, with reference to certificate duration in section 12(6) and amendments to section 16(1).