Anyone found consuming liquor in any public place within a Liquor Control Zone during these periods can be fined up to S$1,500. Repeat offenders could face a heavier fine of S$3,000, a four-and-a-half month jail term, or both.
Retailers who supply liquor beyond the permitted trading hours may also have their liquor licences revoked.
The police also warned against setting off improvised explosive devices constructed using sparklers and discharging fireworks illegally.
They highlighted the potential fire hazards involved and the ability to cause “undue danger and alarm” to the public”.
Those who set off improvised explosive devices could be jailed up to one year, fined up to S$5,000 or both. This could increase to a seven-year jail term, a fine, caning or any combination of these punishments if the act leads to any hurt caused.
Those found to illegally possess and discharge fireworks could get up to two years in jail, fined up to S$5,000 or both.
Importing fireworks is also an offence punishable by a jail term of between six months and two years, and caning of up to six strokes, said the police.