Solution to 19D has been deliberately left unsolved and is to be answered only by a non-regular / novice commenter, with proper annotation. Those who have answered earlier in the week, please give others a chance.
Open for anyone to solve, if not solved by 1 PM.
ACROSS
1 Try rounding up crowds in South Indian temple towers (8) GOPURAMS {GO}{PU<=}{RAMS}
10 Discharges captain losing semifinals, perhaps (7) LAYOFFS pLAYOFFS
11 One left in cycling division's fastest (7) AGILEST {1}{L} in (+age)AGEST(-age)
12 Different from extremely outright woman (5) OTHER {Ou...hT}{HER}
13 Diaries in craft corners, per Spooner (9) NOTEBOOKS (~ boat nooks to notebooks)
14 Ate without folding her seat down (12) DISHEARTENED {DI{HER+SEAT}*NED}
18 Process for plating oyster cell is complicated (12) ELECTROLYSIS*
21 Greeting from the Spanish web domain in Zoom (9) WELCOMING {W{EL}{COM}ING}
23 Warrior discovering gun in Jammu (5) NINJA [T]
24 Fix rent including new lock (7) RINGLET {RIG}{LET} over {N}
25 Everyone joining say, troops returning quickly (7) ALLEGRO {ALL}{EG}{OR<=}
26 Asterix's infinitely funny caricature (6) SATIRE {SATIRE+X'S}*=ASTERIX'S [CA]
27 Divine sightings of Sant at his errands, reflecting regularly (8) DARSHANS {SaNt+As+HiS+eRrAnDs}<=
DOWN
1 Capacity of old historical ship out of Europe (6) GALLON GALLeON
2 Person's spirit - yet captures his emotions, basically! (6) PSYCHE Acrostic &lit
3 Progressive terms for relocating outside India (9) REFORMIST {TERMS+FOR}* over {I}
4 Those who hate people avoid taking this part on cast (14) MISANTHROPISTS {MISS} over {THIS+PART+ON}*
6 Setter's inspecting constant weight scale (5) CLIMB {C}{L{I'M}B}
7 Private phone too near beds (3-2-3) ONE-TO-ONE [T]
8 Reserve ideas (3-5) SET-ASIDE {IDEAS}* [RA]
9 Protest march from yard in Agra has at last been defused (4,10) SALT SATYAGRAHA {Y} in {AGRA+HAS+AT+LAST}*
16 Social groups for fishing and macrame? (8) NETWORKS [MD]
17 Strangely knew about students at technology firm (4-4) WELL-KNIT {WE{LL}KN*}{IT}
19 Central letters hidden in magazine's cryptic puzzle (6) ?N?G?A (Addendum ENIGMA {MAGazINE}* - See comments)
20 Bill recalled working at small clubs (6) BATONS {TAB<=}{ON}{S}
22 Labourer spending time in fuel tanker (5) OILER tOILER
Reference List
European = E, Left = L, The in Spanish = EL, Web domain = COM, New = N, Troops = OR, Europe = E, India = I, Constant = C, Weight = LB(Pound), Yard = Y, Romeo = R, Italy = I, Student = L, Technology = IT, Small = S, Time = T



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