Subhourly data

[David Novak]

Two questions:

1) Has anyone converted MM5 output to 15 min GEMPAK output? I'm familiar 
with the MM5TOGEM program floating around, but it seems to only do 
hourly conversions. I didn't want to reinvent the wheel.

2) Is there a way to write the times of variables in a GEMPAK file to a 
different time? For instance, I want 021225/000F011 to be written as 
021225/0000F01130   (which should be a 11 h and 30 min forecast). GDDIAG 
and GDMOD both need gddatim set to the original time.

Thanks!
Dave