From Dave G3YMC

re: the request for a suitable time for 'activity periods' it is worth
considering a time rather earlier in the day when band noise is quite a lot
lower.  I am on (or at least listening) nearly every day around 7am local
(0600z) and this would be a good time if there were more activity.  At the
weekend a time around 0900 (0800z) would perhaps be very suitable.

Although the rig is still on in the evenings I operate very little at that
time because of high noise levels.

73s Dave G3YMC