I am Nega Getnet, I thank you for joining with DHIS2 Community to solve DHIS2 related problems For my country Ethiopia.May be some ones on the DHIS2 admin or DHIS2 community may hear these before by Ethiopian participants, In Ethiopia there 13 Months Of the year. But DHIS2 Periods only includes 12 Months of the Year. please include 13th Months on DHIS2 otherwise We Lost 13 Month Data of the health care organization.if it is fixed before well otherwise please fix it.
Hi @NegaG!
Welcome to the community, we are glad to have you 
I know @Abyot_Gizaw has done some work on the ethiopian calendar, I hope he can assist you here
Gintare
Thank you For your advice!