This article is within the scope of WikiProject Festivals, a collaborative effort to improve the coverage of Festivals on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.FestivalsWikipedia:WikiProject FestivalsTemplate:WikiProject FestivalsFestivals
This article is within the scope of WikiProject Sri Lanka, a collaborative effort to improve the coverage of Sri Lanka on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.Sri LankaWikipedia:WikiProject Sri LankaTemplate:WikiProject Sri LankaSri Lanka
The sentence "Every year on or about April 13 Sinhala and Tamil people celebrate Sinhala and Tamil New Year Festival, and Muslims celebrate Ramadan." rather suggests that Ramadan is about that date every year.
Actually, being a fixed date on the Islamic Calendar, Ramadan is about a week and a half earlier each year of the Gregorian Calendar.