Is it possible to sync Bangle.js 2 time to smartphone time?

I can't resist trying to learn something new, so I managed to implement quick&dirty BLE time broadcast for Debian 11.

Broadcast side (bash, bluez), one broadcast per second for 60 seconds:

sudo hciconfig hci0 leadv 3
for (( n=1; n<60; n++ ))
do
    time=$(date +%s)
    hex=$(printf '%010X' $time)
    echo $hex
    sudo hcitool -i hci0 cmd 0x08 0x0008 1E 02 01 1A 1A FF FF FF \
        ${hex:0:2} ${hex:2:2} ${hex:4:2} ${hex:6:2} ${hex:8:2} \
        00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    sleep 1
done
sudo hciconfig hci0 noleadv

Receiver side, received_time is Unix timestamp in seconds:

packets=100;
NRF.setScan(function(d) {
  packets--;
  if (packets == 0) {
    NRF.setScan();
  } else if (d.manufacturer == 65535) {
    let received_time = 0;
    for (let i = 0; i < 5; i++) {
      received_time <<= 8;
      received_time += d.manufacturerData[i];
    }
  }
});