Key Difference: Midday and Noon define the same thing. There is no difference between the two. It is usually defined as 12 o’clock in the day time. However, the phrase midday is sometimes used to mention a choice of time, i.e., 11 to 1.

The midday and noon are co-related to each other. They are synonyms, and can be used interchangeably.

The midday or noon is defined as the time of day that is between noon, i.e. 12 PM, and evening. The phrase noon was derived from the Latin word nono hora, meaning the ninth hour of the day. The noon is basically used informally to mean midday.

Midday also used to define as 12 o’ clock in the day time or 12 PM. In Latin, PM or prime meridien means ‘before noon’. The noon or midday starts immediately after midnight. In some of the countries, this is the time when people have lunch. However, in many countries the phrase midday is sometimes used to mention a choice of time, i.e., 11 to 1. Thus, midday and noon are similar to each other. There is one main difference between both the terms that noon is used informally, while midday is used more formally.

Comparison between Midday and Noon:

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