Hot answers tagged time
This is a Machloket in the Talmud (Sukkah 27b, see OC 637) and the Halacha follows the Sages that one can start building a Sukkah on Chol HaMoed. Even R Eliezer who argued there agreed that if one's Sukkah fell down on Chol HaMoed that one can rebuild it.
First of all, the berachos upon pesukei dezimra (Yishtabach and Baruch Sheamar) cannot be made after one has said the Amidah (Shulchan Aruch 52). The question, then, is about the pesukim/mizmorim. The Shulchan Aruch there writes that one may, after finishing davening, go back to say the parts of pesukei dezimra that he skipped, and it sounds a bit like he ...
NOTE: both of these are only partial answers; the 1st may be against the Rashba and the 2nd is disputed First Answer The simplest answer might be that the times of getting up and going to sleep are based on when non-Jews, who are exempt from Shema, wake up (after all, non-Jews do make up the vast majority of the human population). Rishonim (see Tos. 2b) ...
I heard that Rav Elyashiv zt"l held this way, and that it was halakha l'maaseh for him because he slept for less than six hours.
See my answer to a related question. In summary, if your watch gives you personal joy, according to many opinions, you should say Shehechiyanu. If the new watch makes you more punctual to appointments when you were chronically late, then, perhaps your friends should also say "Hatov Vehamaitiv" :-) :-)
FWIW, people go on Hol Hamo'ed trips and pack a "pop up" succah with them. Or, they build a small succah where they are. Years ago, I went on a singles' vacation, and someone built a "Superman booth" - a small succah that fit 1 person. Apparently, there is no problem building a succah on Hol Hamo'ed.
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