MERMITE, if you are looking to make maps for DFX2, try this tool.
me and "BigJoe" made this tool.
http://novahq.net/forum/showthread.php?t=43847
it's not the best programing job (LOL) but it's great for what mappers need it for.
check out the environment viewer. it'll let you view the whole day cycle of each environment.