My healing partner really doesn't affect things; I'll stick with Nocturnal in A4 whether I'm paired with a White Mage, a Scholar, or another Astrologian in either Sect
FFXIV Astrologian skills: Diurnal Sect & Nocturnal Sect
I use Nocturnal Sect in A4 Normal Mode, because running around and grabbing exploding balls and blocking lasers is the only point in any current content where (Nocturnal) Aspected Benefic's potency, effect, and cast time intersect to fill a niche that isn't filled better by some other spell/ability.Everywhere else that I use Astrologian, I use Diurnal Sect.
My healing partner really doesn't affect things; I'll stick with Nocturnal in A4 whether I'm paired with a White Mage, a Scholar, or another Astrologian in either Sect, and I'll stick with Diurnal anywhere else whether the other healer is a White Mage, Scholar, or another Astrologian in either Sect. If someone throws a fit about how an Astrologian is "supposed" to be in a certain Sect when paired with a certain other healer, I'll usually switch just to indulge them, since there really isn't much effective difference between the two stances and I'd rather not waste the party's time with an argument. (Edit: Although I should make clear, it's not that it doesn't make a difference whether you have a regen-healer and a shield-healer in the same party; it's that it doesn't make a difference whether you have a regen-healer and a shield-healer in the same party in the content that I actually use Astrologian in, which is basically just Light Party dungeons, Trial Roulettes, unsynced level 50 content, and Normal Alexander.)
I don't honestly think that there's much of a difference between the two, though. The only skills affected in a significant way are Aspected Benefic, Aspected Helios, and Collective Unconscious. Collective Unconscious is such garbage in either Sect that it doesn't really matter that it's a little more usable in Noct, Aspected Helios is fine in either Sect since it mimics Medica II and Succor approximately equally well, and Aspected Benefic is just a choice between a general-purpose heal that doesn't do its job particularly well, and a situational/niche heal that doesn't do its job particularly well.
What makes the difference for me is solely that the 5% speed boost in Diurnal is a "fun" bonus, and the 5% healing power boost in Nocturnal is a "boring" FFXIV Gil, even though neither is particularly significant and they're roughly equally useful.
Here is one of my Final Fantasy XIV thought collections
lightspeed/benefic proc- Without a reduction in Global Cool Down we simply have the ILLUSION of being faster since nearly every spell you would cast under Linkshell has a cast time shorter than Global Cool Down
FFXIV Patch 3.3 (Trailer) Discussion (2.x - 3.2 Spoilers)
Open with Estinien-Nidhogg making his evil speech about how he's vengeance incarnate. Yeah, yeah, we already know that.
Final Fantasy XIV Crafting Discuss
It's this reasonable timeframe that's got me to almost entirely quit crafting. It doesn't take a master crafter to glance at what you need to do to even break 1star crafting
Let's Talk Final Fantasy XIV Mounts
I would love to play the FF7 Motorcycle game in FFXIV. It fits into the lore just fine, if the story ever takes us into dangerous Garlean territory (deep behind enemy lines)
Final Fantasy XIV: A Very Distinct Look
I think we have a different opinion on what "A very distinct look" is because that is a generic knight of which we have a-plenty.
FFXIV Questions of Othard and Geography
Of course FFXIV is still young, but the reason why we haven't yet seen a full clear official world map of Hydaelyn (and the same reason Vana'diel never had a full world map in FFXI either), probably has something to do with how new areas are added into the game