Last year, between May and July, I downloaded 30 years of ocean data using the cdsapi for my study area. The longitude values were [0.2, 0.7, 1.2].
This year, using the same script and bounding box to download the same ocean data, the longitude values seem to have shifted: [0.0, 0.5, 1.0].
Would it be okay to simply replace the old coordinates with the new ones?