Question: By the time I get home in the Winter, it is already after shekia. Is it better to daven mincha by myself before shekia or to daven after shekia in a chassidishe shul after shekia?
Answer: The Mishna (Berachos 26a) cites a machlokes
as to whether one can daven mincha up until plag hamincha
or until the evening. Rabbeinu Yona (Berachos 18a) and Rambam (Tefilla 3:4)
write that one only has until shekia as it corresponds to the korban
tamid which must not be offered after shekia. Nonetheless, Rashi and
others define evening as nightfall. Rabbeinu Chananel (quoted by the Hagaos
Maimonos, Tefilla 3:3) writes that one can daven
mincha until tzeis
hakochavim, nightfall, corresponding to the time when the ketores
must be offered by (see Shaagas Aryeh 17; Pnei Yehoshua, Berachos 27a).
The Gemara (Berachos 27a) teaches that as this machlokes
was never resolved, one can choose one time over the other (see Shibolei
Haleket 48; Raavad 194). The Mishna Berura (Shaar Hatziyun 233:18) writes that
the machlokes as to whether we consider shekia or tzeis hakochavim
the beginning of the evening is based on a machlokes between Rabbeinu
Tam and the Vilna Gaon (OC 459:2) as to how we calculate shekia.
The Rosh (Berachos 4:3) and Shulchan Aruch (OC 233:1) write
that one must choose one opinion and be consistent with it, not changing from
one day to the next. Many acharonim including the Aruch Hashulchan (OC
233:9) and R’ Moshe Feinstein (Igros Moshe OC 1:24) stress the importance of davening
mincha before shekia. Nonetheless, chassidishe shuls are more
inclined to daven after shekia (see Divrei Yatziv OC 98).
There is a machlokes as to what one who usually davens
earlier should do if they cannot get to a minyan until after shekia.
R’ Yaakov Emden (Mor Uketzia 233) and R’ Ovadia Yosef (Yechave Daas
5:22) write that it is preferable to wait to daven. R’ Shmuel Wosner
(Shevet Halevi 9:48) writes that they should daven alone unless it has
just turned shekia, in which case he should daven with a minyan.
Nonetheless, the Mishna Berura (233:14) writes that it is
better to daven (and complete) mincha without a minyan
before shekia than to daven later with a minyan. Only under
extenuating circumstances, can one daven after shekia (Shaar
Hatziyun 233:21. See Shearim Metzuyanim Behalacha 69:1).
In conclusion, unless the minyan starts right before
or at shekia it would seem preferable to daven by oneself rather
than to daven with a minyan after shekia.