And the Silver Marches goes on to say in 1372 neither have been found 'acceptable' by lathander yet. Some artifact needs to be found first i believe.The North Sourcebook, p. 53 Cities (available as free download on the Wizards home page) gives some suggestions though:
'Year 1371: Rhyester's Matins: This is a holy site of Lathander, the first temple founded by his prophet, the blind Rhyester of Silverymoon, in 717 Dalereckoning. While it started as a small log and mud building taking up only a quarter of the site, it#146;s now one of Silverymoon's major temples. Its congregation hall is two stories tall and the temple and altar are breathtaking. The entire ceiling and eastern wall of the temple are made from glassteel and inset with small prisms to provide a wonderful array of rainbows when the dawn's light strikes them during morning services.
Unfortunately, situations within the temple are not as beautiful as its ornaments. Mornmaster Onadar Ryl (NG hm P16) lies on his death bed after a long, arduous illness severely weakened his 92-year-old body. The temple elders are deadlocked on their decision between two candidates for the post of Mornmaster: Onadar's son, Lavis Ryl (LN hm P11) and Kuth Charagon (NG hm P10). Lavis was an assumed heir of his father's, but he was never officially proclaimed such by Onadar and spent the last three years away from Silverymoon. Kuth is a lifelong native, a popular speaker, and acted as the Mornmaster's second for the past two years. Both men are suited for the post, but if the succession isn't secured by the time of Onadar's death, the High Mage may have to intervene in temple business.'
So what's the situation in TSM? Still up in the air?
PS - I dont see this as meta as it's a major church in one of the most popular religions in faerun so would be well known i assume. But if it is (or of there's more a member of the lathanderite clergy would know) feel free to PM me an answer. There are quite a few of us now:)