Mine desire's non-temporally-cyclica l. (Totally an adjective.)
Basically, there's not really a temporal pattern. Either I'll want it just-because, or I'll be warmed up by vaginal sex and decide I want it, or I won't want it. Maybe the only time I really won't want it is if I'm not feeling well, or if I'm not feeling empty. But that's not highly temporal for me, either.
I didn't vote for any of these options, but I guess I could have voted for all of them except late night / early morning. If I'm not sleeping during 2-4am (due to work or something), the only thing I'll be daydreaming about is sleep.