Nishmat's Women’s Health and HalachaIn memory of Chaya Mirel bat R' Avraham

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Grounds for leniency very close to sunset

1 November, 2015


This is a followup question about the hefsek at 5:28

Sorry to be difficult, but looking at the zmanim again. On the website it says that shkiah was at 5:28 5 seconds. The hefsek was definitely after that but probably before 5.29. My question is that we a mile or so east of the coast and I think 80 m above sea level. Is that far enough away to allow for the extra few seconds…. how long is shkiah? A moment, or a period of time as the sun dips below the horizon???? Could you please provide a source?? On the one hand i am surprised (and a little uncomfortable) at your anwer, on the other hand we usually get less than 2 weeks when I'm not niddah so every day counts. Thank you so much!


We appreciate your concern for halachah.

As it happens, your questions about the nature of shekiah get to the core of the issue.  From the Talmud onward, there have been discussion and debate about how properly to define shekiat hachamah.  So, for example, both R Moshe Feinstein and R Ovadia Yosef take differing possible conceptions of shekiah into account in formulating grounds for leniency in pressing situations for minutes past shekiah.  

In addition to questions about shekiah as a possible ground for leniency, there are grounds to argue that the hefsek taharah need only be inserted by shekiah, not completed by then. Further, as you note, calendars are not exact for every exact location, nor are clocks.

Thus, in a situation such as yours, where the hefsek taharah was within seconds of the calculated shekiah time, there is a strong basis for leniency, such as we expressed.  Such a leniency is usually not relied on if a woman has just made a failed attempt at a hefsek taharah, which calls into greater question her status at shekiah.  

As we further noted, you should take every precaution to avoid this type of situation in the future.

For discussion, including many relevant citations, see R Ovadia Yosef's Taharat HaBayit 2:13.  A look at popular niddah manuals should turn up instructions to ask a halachic question in cases such as yours.

Please write with any further questions.

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