Hello ECMWF team,
I have a question about ERA5/ERA5T availability in CDS.
I found the note in the CDSAPI issue here: How to get the latest date available for the dataset? · Issue #80 · ecmwf/cdsapi · GitHub , but this is a programmatic way to check until when I could now download the data. However, what I’m looking for is the actual timestamp since when this last day is available, i.e. the last timestamp when an update occurred.
My understanding is that ERA5T is usually available with about a 5-day delay behind real time, and that the CDS updates occur at no fixed time during the day. I also found that D-5 data are typically available by around 12 UTC, but not guaranteed.
My question is: Is there an official timestamp or publication time for when a specific ERA5 date became available for download?
Looking for an API with with last_update_timestamp. My alternative solution would be reverse engineering: frequently hit r.json()["extent"]["temporal"]["interval"][0][1] to create a dataset:
example: when checking 12:30:00 UTC and finding new date available for download
ERA5T_date_available_for_download, datestamp_when_possible
2026-03-19, 2026-03-25T12:30:00
Thank you.