50 +/- for L, 60 +/- for M.

Neither of them are rocket scientists about precision. But I don't really pay much attention.

In L's office there is only one tiny clock, placed behind me so that L can keep track but I don't see. I didn't even know it was there the first year I saw her. M has five clocks in his office..... which I also only noticed recently. As I said, I don't pay attention.