They needed to wait 6 days for the HiRISE to get into position to take the image of the landing, and get their alignment for 12-21-2012 along with the Lion's eye in the Heavens, the same as the Roaring Lion on Cydonia Mars the DM Pyramid.The first image in each of the four sequences is from HiRISE observation ESP_028335_1755, taken on Aug. 12, 2012, six days after Curiosity's landing. Changes in Scars From 2012 Mars Landing
https://mars.nasa.gov/resources/7018/changes-in-scars-from-2012-mars-landing/
It took them 6 days to get this image and it took 6 years for me figure out what they were doing, 6 the number for Man.
The 12-21-2012 Alignment their Antares/Eagle/Phoenix
Lion's eye on the Horizon
The Lion's eye on Cydonia Mars is the DM Pyramid of the Roaring Lion.