If The Imam Does Not Go Out For 'Eid On Its Day, He Should Go Out To Hold It The Next Day Sunan Abi Dawud 1157
Translation
Narrated AbuUmayr ibn Anas
Some riders came to the Prophet (ﷺ) testifying that they had seen the new moon the previous day, so he commanded them to break their fast and to set out for their place of prayer in the morning.