Try this
- Check the date and time in the recipient’s location. Choose a greeting that will not interrupt sleep.
- If arranging a live celebration, confirm its timing separately from any message or delivery.
A worked example
“I want to celebrate on your birthday, but I won’t call at midnight. Would a call after your dinner fit?”
An invented example to adapt, not a real exchange or a script you have to follow.
Before you leave it here
A scheduled message can arrive without requiring an immediate response. Do not make the exact minute a hidden test the other person has to pass.