Not having the year,

[oneandonlyonebutyou]

Thank you so much for such a wonderful package.

if I only have the month and day (Yahrzeit of Yusef Hasadik, which is today :) ), how would I calculate when it will be next year ?
I was thinking to

1: Assume it was this year,
Loop
2: if the date does not work try a year before
end of loop

so the birthdays will be correct, but yr is off.

[simlist]

Is this what you're looking for?

from pyluach. dates import HebrewDate

def next_yortzeit(yortzeit_month, yortzeit_day):
    today = HebrewDate.today()
    yortzeit = HebrewDate(today.year, yortzeit_month, yortzeit_day)
    if yortzeit >= today:
        return yortzeit
    else:
        return HebrewDate(today.year + 1, yortzeit_month, yortzeit_day)

[oneandonlyonebutyou]

So if the heb date is not valid, it will automatically correct it?? ..
like

today = HebrewDate.today()
for i in range(100):
    yortzeit = HebrewDate(today.year+i, 13, 5) #of course we not have Adar2 every year 

[simlist]

No it will not correct it automatically. It will throw a ValueError for a nonexistent date. I might add a method to add years or months to dates to a future version to deal with that, but for now you can either handle the exception or use hebrewcal.Year.leap and len(hebrewcal.Month).

[oneandonlyonebutyou]

Thank you :)
Assuming " 5th of Adar 2" as a birthday,
how am I supposed to list all Hebrew dates for the next 10 years?

[simlist]

For a specific case like that you can just do:

from pyluach.dates import HebrewDate
from pyluach.hebrewcal import Year

birthdays = [HebrewDate(5782 + i, Year(5782 + i).monthscount(), 5) for i in range(1, 11)]

To generalize though you'd have to handle which Adar you want a regular Adar to become in a leap year, and if you want to round forward or back when the start date is the 30th and the end month is only 29 days.

[simlist]

v2.1.0 now has HebrewDate.add() and HebrewDate.subtract() methods to add or subtract years months and days.