The line in the first image represents the international date line. That's where the date changes. It's kinda arbitrary, and could have been made like image 2. Then, North America would have been the "Land of the Rising Sun." Why am I sharing this? See next tweet.

A lot of people look at the nights of the Arabic calendar in conjunction with Gregorian dates and conclude that laylatul qadr (or even the start of Ramadan) is different for different regions. Some follow local moon sightings, and others follow the sightings in Makkah.

However, if you look at the first night of Ramadan in Makkah, the same night continues westward until it reaches the eastern regions of the globe with moon sightings. Technically speaking, it's the same night in the lunar calendar, but a different date in the Gregorian calendar.

Laylatul qadr is 24 hours long when you look at it on a global scale, and that way, everyone observes the same night.

(Except for those who follow Makkah in their schedule, while their countries physically haven't sighted the moon yet. They're observing ahead of schedule)