At block 2903040 Myriadcoin had a "halvening" event.
16 Aug 2019, 19:47
At block 2903040 Myriadcoin had a "halvening" event. In Myriadcoin's case from MIP3, it is actually a "longing" in that blocktime has now increased from 1min to 2min and rewards remain at the same 250XMY.
For some documentation on MIP3, see:
#xmy