For publishers: got this from the DSC Prize for South Asian Literature team:

“We are extending the deadline for entries for the DSC prize for South
Asian Literature to 5th May, 2010. This is due to several requests coming
from many publishing houses, mostly overseas, whose entries are delayed
due to the grounding of flights after the volcano eruption in Iceland,
The new deadline for submissions: 5 May,2010.”

The eligibility rules: