The up-to-date (or green leaf 🌱) symbol indicates that a dataset is up-to-date – that there has been an update to the data contained in the dataset (not the dataset metadata) within the update frequency stated.

The calculation to determine if a dataset is up-to-date has been updated as of April 2025. It is as follows: End date + Frequency = cut-off date when data becomes out-of-date.
Example: a dataset contains data from 01 January 2025 until 31 March 2025 and has an update frequency of every 3 months, it will appear as up-to-date (green leaf 🌱) until the 30 June 2025.