Phrase "On your day, I am missing you again"

English as a Second Language English Vocabulary, Grammar and Idioms
1

Dear everyone,

Could you please help me to understand the phrase “on your day” in the sentence of Topic Subject?

Thank you very much, and have a nice new week.

Best Regards,
Steppe Wf

2

I feel that it means, " On your special day, such as a birthday or special anniversary.

3

On your day means the day which belongs to you only. It could be your Birthday or Marriage anniversary or any other special day you want to celebrate. That is your day only.