first of all , d9 chart came from d1 so focus on
lagna sign rising . like for ex, sign rising in lagna
is Aries with 15degree 31minutes 53second . so
aries is movable sign , navmasa start from firey
sign like 1,5,9 having movable char sign in it ,
means , mesh is char , Leo is fixed sign and
dhanu sign is mutuable . so namasa start from
aries char sign . now again focus on d1 lagna
degree , min, sec . so here each namasa have a span of 3degree 20min , so countfrom aries,
and by adding 3deg 20min up to lagna degree
we found our namasa lahna falls on, 5th namasa
of Leo sign . here u careful in second .
because if second cross the span of giving
navamasa span , then we hv to go next navmasa.
same rule apply for finding for planet in which navmasa fall .