Northern Railway issues its first corrigendum regarding Tender Notice No. 21/2026-2027 (Tender No. 77269045RGC) originally scheduled to open on 21.07.2026. The administrative update officially extends the final tender opening date to 21.08.2026 while all other baseline terms and conditions remain completely unchanged. The full notification details are hosted on the public e-procurement portal. Bidders can visit www.ireps.gov.in to review updated timeline specifications and download revised documentation.