9. Right before the day turns into the following one.
“His message was the last one of the day I received and it left a lasting impression on me,” recollects one Japanese woman who just celebrated her 23rd birthday. Sending your message with a tasteful note to celebrate her birthday at the last second will help her remember it for a long time. One note of caution though – if you know she’s an early riser, there’s a good chance she’s already in bed and she may find your late night message an utter nuisance.