Greetings appreciated @nadeesew.

One of the things that I like the most about Steemit is how we can learn about customs and traditions from parts of the world that we will never be able to visit in our lives.

I live in South America, and I never imagined that in Sri Lanka they celebrate the new year in mid-April.

I was able to read on Google that Sinhala Avurudu/Tamil Puththandu occurs when the Sun moves from Meena Rashiya to Mesha Rashiya ending a 12 month cycle.
This is As you say: "...new year when the Earth completes one revolution around the sun and when the Earth begins a new revolution..."
It is exactly one complete revolution. Surprising. We have many things to learn from the ancient culture.

I pray to Almighty God to always bless your table and fill it with abundant food.

Ayubowan...

In another order of ideas, I would like to invite you to learn about the SP delegation program that we offer at Project Hope. We have just surpassed 250K SP, thanks to our delegator friends. This voting power allows us to distribute among our delegators 100% of the manual curation rewards we make. Our current voting power offers 11% APR, which we hope to increase in the coming months if more people like you join our program.

https://steemit.com/hive-175254/@project.hope/why-you-should-consider-supporting-project-hope-with-delegation-100-dividents-payout

Best regards.