a) Sun is exalted. Now we know that the Sun gets exalted status in ARIES.
b) Moon in Punarvasu nakshatra and in Cancer rashi and lagna
c) Tithi is Naumi (ninth) shukla paksha.
This is a disservice and has to be discouraged by all concern.
One must also understand that this is the reason why we are celebrating RAMNAUMI when Sun is in Pisces, as we cannot get all the above three variables in place .
In this case Venus is exalted in Pisces, and Pisces is owned by Jupiter. Venus in Pisces would have (if Jupiter was NOT in Sagittarius) granted extreme pleasure and satisfaction through female company, which was not the case with Shri Ram. As such Jupiter in Dhanush did not allow the yoga in Pisces to flourish.