With the requirement to launch daytime, this may present interesting
scheduling requirements between ISS and Hubble launches as well as maintenance schedules.

On the other hand, if on can launch hubble during a long period when you can't
go to ISS due to daytime launch requirement, it would not have much impact on
ISS assembly.

I was under the impression that *only* STS-114 had the daytime launch
requirement....from then on out it'll be back to whenever is
necessary.
Hubble repair flights have all launched and landed at night, but I'm
sure that's more of a coincidence...or is it??
John