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September Holiday Patchwork: Mexico Sets Sept. 16 Rules, Argentina Shifts Oct. 12, Cantabria Takes Sept. 15

Local rules create uneven long weekends with selective service closures.

Overview

  • Mexico’s labor law confirms Sept. 16 as a mandatory holiday with triple pay for anyone who works, and employers face fines of roughly 5,675 to 565,700 pesos per affected worker for noncompliance.
  • Sept. 15 in Mexico is not a statutory holiday; banks operate normally that day and close on Sept. 16 under ABM and CNBV calendars.
  • The federal Education Ministry did not declare a nationwide school break for Sept. 15, yet Mexico City and states including Yucatán, Durango, Querétaro, Baja California and Veracruz authorized a local two‑day school break on Sept. 15–16.
  • Argentina’s Buenos Aires Province confirmed local September holidays: Sept. 15 in Trenque Lauquen, Dolores and General Las Heras, Sept. 16 in Laprida and Cacharí, and Sept. 26 in Maipú and Carmen de Areco for public administration and local banking.
  • Argentina’s national government moved the Oct. 12 holiday to Friday, Oct. 10 via Resolution 139/2025 to create a long weekend, while Spain’s Cantabria observes a regional holiday on Sept. 15 for the Virgen de la Bien Aparecida.