There was another "regular" adjustment of the time which is generated/calculated from the Rover's filename code seconds of about 60sec. (MER-A on sol2177 and MER-B sol2164), because of their clock drifts on Mars. But about then there has also something strange happened on the MER Pancam Data Tracking Web Interface. The Sols have suddenly shifted back additonally by one Sol.
For MER-A (Spirit):
On Sol 2176 at 12:00:41 the first image of the first sequence got:
On the same Sol (as displayed) at 12:03:24 the first image got:
Now the strange thing is, the difference of the seconds from the two entries is 88973 what means more than one Sol apart - i.e. according the filename seconds in the entry at 12:03:24 it's already Sol 2177 not 2176 ...?!
The same for Opportunity:
On Sol 2168 12:27:40 there's only a single image with:
In the next entry that displays Sol 2169 11:44:57 there the first image got:
That's a difference of the two entries of 174885 seconds - what means two Sols (174885/88775=1.97sol), i.e. it's already 2170 and not 2169 as displayed.
Was that intended or has something gone wrong here?