OCA meaning in Regional ?

Answer: What is Orange County Astronomers mean?

The Orange County Astronomers (OCA) is a 501(c)(3) non-profit, civilian-led astronomy organization in Orange County, southern California. It was formed in 1967 and currently operates with around 800 concurrent members; they offer beginner courses in astronomy, and have meetings on the second Friday of every month at Chapman University. Currently, the OCA offers a dark-sky site to viewers, which includes a 22-inch Schmidt-Cassegrain telescope and public-use observation areas. In addition, the OCA has been registered as an affiliate of the Astronomers Without Borders program since March of 2012.

reference

Full Form	Category
Observatoire de la Côte d'Azur	Academic & Science
Observability Co-distribution Algorithm	Academic & Science
Oceanic Control Area	Academic & Science
Off Campus Advisor	Academic & Science
Open Control Architecture	Academic & Science
Ontario Classical Association	Academic & Science
Off Campus Access	Academic & Science
Ohio Connections Academy	Academic & Science
Open Checking Account	Accounts and Finance
Ocean Reef (fl)	Airport Code
Orthodontic Centers of America, Inc.	Business
Ohio Collectors Association	Business
Ohio Contractors Association	Business
Object of Competitor Analysis	Business
Office of the Chief Accountant	Business
Oracle Certified Associate	Certifications
Organization of Chinese Americans	Community
Occupational Chaplains of America	Community
Ohio Counseling Association	Community
Ohio Cichlid Association	Community
Orthodox Church in	Community
Organisation Classification and Association	Community
Organic Consumers Association	Community
Orthodox Church in America	Community
Odoo Community Association	Community
Office of Cultural Affairs	Community
Opportunity Community Ability	Community
Oklahoma Counseling Association	Community
Ontario Camping Association	Community
Oklahoma Christian Academy	Community
Oklahoma Coaches Association	Community
Oregon Chiropractic Association	Community
Oklahoma Cattlemens Association	Community
Oregon Center for the Arts	Community
Over Clocker's Addiction	Computing
Online Crash Analysis	Computing
Object Content Architecture	Computing
Open Client Adapter	Computing
Off-Hook Call Announce	Computing
Oracle Certificate Authority	Computing
One Click Application	Computing
One Click Action	Computing
Oracle Certified Administrator	Computing
Oregon Cattlemen's Association	General
Oxford Capacity Analysis	General
The Open Coloring Axiom	General
Our Common Aim	General
Ottawa Construction Association	General
Obstacle Clearance Altitude	General
Ontario Cattlemen's Association	General
Oracle Contributor Agreement	General
Open Systems City Association	General
Oil Condition Algorithm	General
Oldsmobile Club of America	General
Oldsmobile Club of Arizona	General
Open Coloring Axiom	General
Old Cars Association	General
Oldsmobile Club of Australia	General
Olympic Cascade Aquatics	General
Online Car Auction	General
Office of Consumer Affairs	General
Organization of	General
Office of Congressional Affairs	General
Optimum Chainring Angle	General
Organic Cotton Accelerator	General
Optically Clear Adhesive	General
Office of Consumer Advocate	General
Ontario Carbon Allowance	General
Ostomy Care Associate	General
Office of the Child Advocate	General
Office of Customer Advocacy	General
One Cancels All	General
Overhead Cost Allocation	General
Oak Creek Apartments	General
Offsite Consequence Analysis	General
Office of the City Administrator	General
Object Complement Adjective	General
Originating Case Agency Number	Governmental
Originating Case Agency	Governmental
Office of Court Administration	Governmental
Open Content Alliance	Governmental
Open Communities Alliance	Governmental
Open Charge Alliance	Governmental
Opportunities for Community Alliances	Governmental
Oculocutaneous Albinism	Medical
Offensive Counterair	Military and Defence
Operational Control Authority	Military and Defence
Ocean Reef Club, Florida USA	Regional
Orange County Astronomers	Regional
Ontario Cycling Association	Sports
Olympic Council of Asia	Sports
Outstate Calling Area	Telecommunication