Configurable countdown target?

[eartharoid]

https://en.wikipedia.org/wiki/Observance_of_Christmas_by_country

• 24th December 00:00
• 24th December 16:00 (https://www.whychristmas.com/cultures/austria)
• 25th December 00:00
• 6th January 00:00
• 7th January 00:00