Also, I've just made a pex (executable) file from the sample script I've sent earlier, it's attached, if you want to try it out.
The pex is just a glorified zip file, so you can open it and check out inside, but you can execute with:
usage: send_time.py [-h] [--correction CORRECTION] address
Bangle send time
address bluetooth address to connect
-h, --help show this help message and exit
milliseconds to add to time to compensate for connection time