Respected Gopalan Sir,
The death thithi of a deceased person is the thithi at the time of death.
It was ashtami thithi for 3.29 nAzhigais (after Sunrise) on
2018 Ramanavami day.
Suppose the death had happened before 3.29 nAzhigais,
ashtami has to be taken as the thithi.
So, the time of death should be given for calculation.
Am I correct Sir?