بسم الله الرحمن الرحيم
(Fatwa: 1119/865/H=9/1434)
There is no harm in purchasing and using such calendars provided it does not have any picture of living being. And when the year completes, it is lawful to bury it or drop in sea after tying it with stone or some weight.
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband
