the whole country

to be; who are in (relative pronoun)

Buddhist

saintly persons; fellow (Buddhist)

Full moon day of Kasone

Visak day

as

sacred

meritorious festivals

to celebrate; to hold; to convene

festival

ceremony

to be at peace

pleasantness (tranquility)

to get; to achieve

security

police

heavily

have deployed; put in place

to establish

Siddhartha Gautama

the exalted Buddha

to be born

birthday

Special day; sacred day

population

percentage

worshiper

public

holiday

to designate

to enact; to prescribe