Bhante, I wish you a very happy birthday today, and many more filled with good health and happiness. Thank you for the gifts that you give all of us here every day, gifts of Dhamma and its understanding, scholarship, and general wisdom, sila, and inspiration as the Buddha would have hoped his monastics would give to others.
Sadhu! Happy birthday!
Long life, Good Health, Joy and Strength - may these five qualities be always present in your life and in the life of those near and dear to you!
While it is great to commemorate birthdays, there is also something else:
AN3.12:4.1: In the same way, a mendicant should commemorate three places as long as they live.
What three?
The place where the mendicant shaved off their hair and beard, dressed in ocher robes, and went forth from the lay life to homelessness.
This is the first place.
The place where the mendicant truly understands: ‘This is suffering’ … ‘This is the origin of suffering’ … ‘This is the cessation of suffering’ … ‘This is the practice that leads to the cessation of suffering’.
This is the second place.
The place where the mendicant realizes the undefiled freedom of heart and freedom by wisdom in this very life. And they live having realized it with their own insight due to the ending of defilements.
This is the third place.
These are the three places a mendicant should commemorate as long as they live.
(Thinking of a Sutta about birthdays, this is the closest I can find.)
Wishing you happy commemorating of many good things!