Hi, For our internet airline booking engine of flights we¹re using the tzdata2012j version. In this version the DST timing for Morroco is not correct. We¹re facing a lot of problems because of this, this because a large amount of flights are departing from Morocco between 23:00 and 24:00. Morocco is also on Wintertime during the month of Ramadan. The correct timezone should be: WET DST starts on Sunday, 28 April 2013, 02:00 local standard time. DST ends on Tuesday, 9 July 2013, 03:00 local daylight time. DST starts on Thursday, 8 August 2013, 02:00 local standard time. DST ends on Sunday, 29 September 2013, 03:00 local daylight time. Source: http://www.timeanddate.com/worldclock/city.html?n=60 Would you please be so kind to give me an indication when this can be changed? Best regards and thanks, Erik Erik Homoet Business Consultant quintessence consulting AMS mobile: +31 614534022 email: ehomoet@quintessence.net skype: erik_qc_ams