Starman - How to Say Goodbye

Lunar Twilight is a time of transition when the echo of yesteryear can be seen and felt.   This is because the lunar cycle started last year on December 27, 2019.   On January 24, 2020 the first lunar cycle will commence and then the nights and days will be in sync with 2020.

What is a flag to an alien species?  Perhaps they are made of lights or created with lasers?  In Starman, starring the Dude, we can only imagine.

Nonetheless, the final goodbye scene in this film is like the final passing of 2019 during Lunar Twilight.