The Ministry of Habous and Islamic Affairs says it will look for the new moon on Thursday evening, 19 March, to decide when Eid al-Fitr will begin.
In a statement, the ministry said the sighting will take place after the sunset (Maghreb) prayer on the 29th day of Ramadan.
Judges, local religious officials and other authorities have been asked to watch for the moon, as part of the system used every year across the country.
Eid, which marks the end of Ramadan, will be confirmed based on whether the moon is actually seen. The result will be announced later that same evening.
If the moon is seen on Thursday night, Eid will be on Friday, 20 March. If not, Ramadan will last 30 days and Eid will be on Saturday.
Morocco uses more than 200 observation points across the country. Trained observers and religious officials must confirm the sighting with the naked eye. This sometimes means Morocco starts or ends Ramadan on a different day from nearby countries.
The sighting of the new moon marks the start of Shawwal, the next month in the Islamic calendar, and the beginning of Eid al-Fitr.
People usually wait for the official announcement before making final plans. Eid in Morocco is marked by giving to the poor (Zakat al-Fitr), a special morning prayer, and spending time with family.
