How do I sort my data based on time series?

It is a question, but when dealing with regression learning devices in the app, I do not know how "cross-validation" in the column of new session -> verification handles data.

The data entered is one year's time series data, such as temperature data measured every hour, separated from 20〇〇/month/day. Does "cross-validation" verify this data by dividing it into chronological order?

Or is it n-divided by collecting data completely randomly regardless of the date?

If it's the latter, I'd like you to tell me how to divide the data based on time series.