QUOTE(Oltromen Ripot @ Mar 31 2023, 12:56 PM)
hari raya is a moving target if you based it on Grogorian calendar.
because Islamic event is based on Hijri calendar, which is based on lunar, which is always shorter per cycle than Gregorian solar cycle.


新月
约在农历每月
三十或初一,月球位于太阳和地球之间。
地球上的人们正好看到月球背离太阳的面,因而在地球上看不见月亮,称为新月或朔,
这时是农历初一。此月相与太阳同升同落,只有在日食时才可觉察它的存在。
Around the 30th or 1st day of each month in the lunar calendar, the moon is between the sun and the earth.
Our Moon doesn't shine, it reflects. Just like daytime here on Earth, sunlight illuminates the Moon.
We just can't always see it.
When sunlight hits off the Moon's far side — the side we can't see without from Earth the aid of a spacecraft — it is called a new Moon.
2023 19 APRIL is february 29 in lunar calendar
this month do not contain 30th!!
so do you think this year 22 april raya or will change?