Categories Alerts and Notices Regulatory Notices Regulatory Notice 21-04: CAT Clock Synchronization Certification Reminder – Due March 15th Post author By Lauren Strathman Post date March 5, 2021 Date: March 5, 2021 Description: CAT Clock Synchronization Certification Reminder – Due March 15th RegNotice21-04Download ← Systems Alert 21-08: RESOLVED – Trade Reporting Issue → Trader Alert 21-09: MEMX has declared self-help against LTSE