However it’ll not exclude the HOLIDAYS, Because each org has its own holidays based on region /country. Hence salesforce don’t have knowledge about list of holidays. CASE(MOD( StartDate__c – DATE(1985,6,24),7), 0 , CASE( MOD( EndDate__c – StartDate__c ,7),1,2,2,3,3,4,4,5,5,5,6,5,1), 1 , CASE( MOD( EndDate__c – StartDate__c ,7),1,2,2,3,3,4,4,4,5,4,6,5,1), 2 , CASE( MOD( EndDate__c – StartDate__c ,7),1,2,2,3,3,3,4,3,5,4,6,5,1), 3 , CASE( MOD( EndDate__c – StartDate__c ,7),1,2,2,2,3,2,4,3,5,4,6,5,1), 4 , CASE( MOD( EndDate__c – StartDate__c ,7),1,1,2,1,3,2,4,3,5,4,6,5,1), 5 , CASE( MOD( EndDate__c – StartDate__c ,7),1,0,2,1,3,2,4,3,5,4,6,5,0), 6 , CASE( MOD( EndDate__c – StartDate__c ,7),1,1,2,2,3,3,4,4,5,5,6,5,0), 999) + (FLOOR(( EndDate__c – StartDate__c )/7)*5) Steps to create: Create a formula fi...