We have OpenSuSE13.1 installed on 4 of our servers. For archiving and processing logs we execute ‘date --date=yesterday +’%Y:%m:d’ from a script exactly around midnight( 00:00:01 ). This was working properly and on 8th march around 03AM the timezone changed to CDT from CST. The next day (i.e on 9th march) when script executed the date command around midnight it got ‘07’ as yesterday’s date on all 4 servers. Any idea how the timezone change affected this?