Is there a way to know when a specific Harmonized Landsat Sentinel image was added to the Sentinelhub archive? I want to write a program that runs every evening at the same time and checks for new images over my area of interest. One option I can think of is to record the dates of the most recent image from the previous run for each tile in my area of interest and compare that to the dates of tiles available in the current run. If there is a way for me to use metadata to know when an image was added to the archive, I wouldn’t need to maintain a record of image dates. If there are alternative methods to accomplish this daily check for new images, please let me know.
Hi, I would recommend using the Catalog API to search for the latest images for your AOI. You could then gather all the results with the previous day’s date to inform your query.
Thank you @william.ray. The SNS notification approach is interesting, but your suggested approach might be a better fit. Does SNS notification use (cost) processing units or requests?
The SNS notification would be interacting directly with the AWS S3 bucket so would not uses processing units. However, the Catalog API usage should be low depending on the number of requests you are making.