Well, that is an more or less easy calculation, even there are some variances due to the fact, that the actual block times vary.
The block reward halves ~every 4 years the currently calculated date of the next halving can be found on the[Feathercoin Homepage[(www.feathercoin.com) we are currently at a reward of 40 FTC / block.
So the halving is 40/20/10/5/3/2/1/0 (the last 4 values are because the reward will be in full coins always.
The halving from 40 to 20 FTC per block is shown at the page mentioned above, that leaves 6 halvings plus the time till the 40/20 FTC halving
So the final Feathercoin will be mined 6x4 years + 1234 days (= 3.38years) from today.
If I’m not wrong this is 2018+24+3.38 what gives some day in 2045 for the last coin mined.
If I made a mistake in the calculation, someone correct me.
I hope to be still alive that day :D
Regarding LTC, it’s not a question about the total number of coins mined and the number of blocks per time frame, but more how frequently the halving is done.