Srimathe Rangaramanuja Mahadesikaya Namaha
Srimathe Sri Varaha Mahadesikaya Namaha
Sri Velukkudi Krishnan Swamy Thiruvadigaley Sharanam
Sri:

Respected Swamies,

Apart from Kinchit calendar, Adiyen found this website to be useful for generating tarpanam Sankalpam based on time input & location.

Hope it is useful to any bhAgavathA

https://www.ahobilamutt.org/us/services/sankalpam/sankalpam.asp

Eg:
Displaying results for Chennai@ lat: 123, lng: 456 Asia/Calcutta timezone

Sankalpam for Chennai on 21st Jan 2023
At 10:37 AM IST and valid through 03:26:12 AM of following day:
Subhakruta nAma samvathsarE, uttarAyaNE,
hEmantha rithou,makara mAsE,
krishna pakshE, amAvAsyAm shubha thithou,
sthira vAsara, uttarAshAdA nakshatra yukthAyAm…
Sunrise: 06:39:24
Sunset: 18:00:45

Dasanudasan