Fall 2025 Registration is temporarily offline for maintenance. Please return after 9 AM (EST) on August 12 to complete your registration. We apologize for the inconvenience. For questions, contact service@acs.org

Sample ACS Meeting & Expo Timelines

Spring Meeting

July

  • Document future symposia

August

  • MAPS opens to authors
  • Call for Papers published in C&EN

October

  • Abstract deadlines
  • Space request forms made available
  • Virtual EMS opens

November

  • Preliminary Program due
  • Request forms due

December

  • Final Program due

January

  • Preliminary Program published in C&EN
  • Housing and registration opens
  • Final Program posted on website
  • Space assignments completed
  • Menus due

February

  • Final Program publishes in C&EN

March/April

  • Meeting occurs

Fall Meeting

December

  • Document future symposia

January

  • MAPS opens to authors
  • Call for Papers published in C&EN

February

  • Space request forms made available
  • Virtual EMS opens

March

  • Abstract deadlines

April

  • Preliminary and Final Programs due
  • Request forms due

June

  • Preliminary Program published in C&EN
  • Housing and registration opens
  • Final Program posted on website
  • Space assignments completed
  • Menus due

July

  • Final Program publishes in C&EN

August

  • Meeting occurs