The date not only changes each year it changes daily. That is part of the purpose of a calendar.
As of today, the desi date in Pakistan is 3rd Safar 1445 AH according to the Islamic lunar calendar. The Islamic calendar is about 11 days shorter than the Gregorian calendar, so the corresponding Gregorian date will vary each year. The current month, Safar, is the second month in the Islamic calendar.
The 9th of Muharram in the year 1969 corresponds to the 18th of October, 1969 in the Gregorian calendar. Muharram is the first month of the Islamic lunar calendar, and its dates vary each year in the Gregorian calendar.
The Seder is on the first night of Passover which is the 15th of Nissan on the Jewish calendar. It corresponds to a different date each year on the Gregorian calendar. But is usually in the beginning to mid April.
Not this year. Earth Day is the same date in the Gregorian calendar each year, and the Gregorian calendar is not synchronized with the lunar calendar at all.
The Punjabi calendar, also known as the Nanakshahi calendar, is a solar calendar used by Sikhs and some Punjabi communities. It begins with the month of Chet, which corresponds to March in the Gregorian calendar. The year in the Nanakshahi calendar is numbered from the birth year of Guru Nanak, the founder of Sikhism, which is 1469 CE. Thus, the specific date and month in the Punjabi calendar can vary each year in relation to the Gregorian calendar.
The pilgrimage occurs from the 8th to 12th of Dhu al-Hijjah, the last month of the Islamic calendar. Because the Islamic calendar is about eleven days shorter than the Gregorian year, the Gregorian date of Hajj changes each year.
Hanukkah starts on a different day each year because it follows the Hebrew calendar, which is lunar-based, rather than the Gregorian calendar, which is solar-based. Specifically, Hanukkah begins on the 25th of Kislev, the ninth month of the Hebrew calendar, resulting in its date varying between late November and late December in the Gregorian calendar. This shift occurs because the Hebrew calendar is about 11 days shorter than the Gregorian calendar.
In the Gregorian calendar, each month does not - so the question is misguided.
The calendar year 2015 was the same as 2026 in terms of day-date alignment. Both years started on a Thursday and had the same configuration of weekdays for each date. This recurrence happens because of the way leap years and the progression of days work in the Gregorian calendar.
The date of Rajab varies each year as it follows the Islamic lunar calendar. To determine the current date of Rajab, you would need to check an Islamic calendar or a reliable Islamic date converter for the specific year you are inquiring about. As of October 2023, Rajab would typically fall around early to mid-2024 in the Gregorian calendar.
The answer is a calendar. Each month, the date changes regardless of how actively or minimally the calendar is used.
I believe this calendar is called the Gregorian Calendar after the Pope at the time or some other World leader.