In 1971, five California high school students unknowingly created an unofficial holiday for marijuana smokers across the nation.

They used the term “420 Louis” to signal when they would meet every day to smoke under the San Rafael High School’s statue of Louis Pasteur, according to High Times, a monthly magazine dedicated to advocating the legalization of marijuana.

Today, the term “420” and the date April 20 lend themselves to a variety of marijuana-related topics, including the legalization debate, growing the plant and drugs on campus, among many others.

Iowa drug laws:

Possession of drug paraphernalia

• Simple misdemeanor
• Up to 30 days in jail and a fine of up to $625, minimum fine of $65

Possession of a controlled substance

First offense

• Serious misdemeanor
• Up to six months in jail and a fine of up to $1,000, minimum fine of $315

Second offense

• Serious misdemeanor
• Up to one year in jail and a fine of up to $1,850, minimum fine of $315

Third offense

• Aggravated misdemeanor
• Up to two years in prison and a fine of up to $6,250, minimum fine of $625

Conspiracy

• Controlled substance with intent to deliver
• Sentence depends on controlled substance and weight of substances involved

“Super” Class B Felony

• 1000 kilograms +
• Imprisonment for not more than 50 years and a fine of not more than $1 million

“Normal” Class B Felony

• 100 to 1,000 kilograms
• Imprisonment for not more than 25 years and a fine of not more than $100,000, minimum fine of $5,000

Class C Felony

• 50 to 100 kilograms
• Imprisonment for not more than 10 years and a fine of not more than $50,000, minimum fine of $1,000

Class D Felony

• 50 kilograms or less
• Imprisonment for not more than five years and a fine of not more than $7,500