> A few corrections:<br>> 1. The disagreement between the Chachamim and Rabbi Yehuda is only about<br>> when is the (earliest) time to daven marriv and not when to say Shma.<br><b>you are correct in psht in the mishnah however when writing for halacha purposes shma is included in  עי' שוע"ר סי' תפט: י"</b>ב ו<b>תוס' ברכות ב</b>.  <br>
> 2. According to the Alter Rebbe's Siddur the period from ×ž× ×—×” ×§×˜× ×”  until<br>> sunset (not צ×ת ) is divided in half which is called  פלג ×”×ž× ×—×”<div><b>i know and i lchatchila wrote it that way, however again im trying to keep it simple to give a basic explanation. in truth its a machlokes </b><br>
> 3. e.g. during the time of the year when the day light is 12 hours from 6<br>> a.m. to 6 p.m. with the afternoon stating at 12p.m. so פלג ×”×ž× ×—×” would be<br>> 4:45 p.m. (not 4:30).</div><div><b>correct</b><br>> 4. The halacha says that you could choose either opinion for Maariv and if<br>
> one davened marriv earlier he would have to say שמע again at  [3]צ×ת הכוכבי×</div><div>×–<b>×” ל×ו ×“×•×§× ×“××¢"פ שכן ×”×•× ×œ×©×•×Ÿ המחבר סי' רל"×’ מ"מ ×¢×™' במג"× ×¡×™' רס"×–:× ×•×”×ž×©× "ב סי' רל"×’:×™× ×•×¡×™' רל"×” :יב ושער ציון ×©× ×¡×§"ט ×•×”×˜×¢× ×©×ž×§×“×™×ž×™× ×”×™× ×œ×¦×•×¨×š ×ž× ×™×Ÿ ×ו בער"ש ×ž×©×•× ×œ×”×•×¡×™×£ מחול </b>.... <br>
> .</div>