Directives From the Guardian
Pages 30-31
 

78: FEASTS (Attendance at)
 
1

"Attendance at 19-Day Feasts is not obligatory but very important, and every believer should consider it a duty and a privilege to be present on such occasions."

 
2

"He wishes the Bahá'ís to press for recognition of their right to observe their own Holy Days, and to observe them whenever possible in strict accordance with our teachings."