The UEFA European Championship, commonly known as the Euros, is a prestigious football tournament held every four years. To calculate the number of days since the beginning of the latest edition of the Euros, we need to determine when the tournament started. As of the current date, let's check the commencement date of the most recent UEFA European Championship and perform the calculation.

The 2020 UEFA European Championship, despite its name, was postponed to 2021 due to the COVID19 pandemic. It officially commenced on June 11, 2021.

Now, let's calculate the number of days that have passed since June 11, 2021, until today, May 13, 2024.

First, we calculate the total days from June 11, 2021, to June 11, 2024:

Days in 2021: 203 (June 11 to December 31)

Days in 2022: 365

Days in 2023: 365

Days in 2024 (until May 13): 133

Total days: 203 365 365 133 = 1066 days

Therefore, as of May 13, 2024, it has been 1066 days since the commencement of the 2020 UEFA European Championship.

This calculation gives us an insight into how much time has passed since the tournament began. Whether you're a fan keeping track of the event or someone interested in historical football data, understanding this timeline can provide context and perspective.