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The times are UTC, or "Zulu" time (indicated by the 'Z' at the end of the time value).

The issue has been resolved and systems are performing as normal.

ASF is currently experiencing a system issue that is preventing data downloads. We are working to resolve the problem as quickly as possible. We apologize for the inconvenience!

Token authentication wasn't included at the time burst distribution was implemented, but it is a feature we hope to add in the near future.

There are no system problems, so the issue may be if you are attempting to use token authentication, which is not supported for bursts.

Let us know if this is not the case, and perhaps an example of the authentication method you're using.

Thank you.

June 25, 2025 : ASF is experiencing a delay in receiving new Sentinel-1 products from ESA because of a network issue beyond our control. You can expect delays of 10 days or longer before new acquisitions are available from ASF. We do not have any indication yet on when this issue will be resolved, ...

If Heidi's suggestion doesn't do the trick and you're trying to use a bulk download script, the error may be the result of a stale authentication cookie. Try deleting the file ".bulk_download_cookiejar.txt" from your home directory and restarting the script. You'll be prompted to log in, a...

From ESA: "After successful completion of all Sentinel-1C satellite commissioning activities, the calibration has been calculated to be applied to the Sentinel-1C SAR products. Starting from May 19th, Sentinel-1C SAR products are calibrated and their quality is in line with Sentinel-1 data qual...

ASF DAAC announces that Sentinel-1C data are available to download through the Vertex search application, programmatically using asf_search version 8.1.3, and through Earthdata Search . Sentinel-1C is the latest addition to the European Space Agency’s Sentinels satellite fleet. Like Sentinel-1A, it ...

Cherif,
The issue is resolved, and the relative orbit value for Sentinel-1C scenes being reported in Vertex is now correct..

Thanks again for noticing this and letting us know!