Changed verse change to 2AM EST DST

src/App.tsx

@@ -1,6 +1,6 @@
 import { useCallback, useEffect, useState } from 'react'
 import CandleCanvas from './Candle'
-import { daySeed, loadKJV, msUntilMidnightUtc, pickForDay, type Verse } from './verse'
+import { daySeed, loadKJV, msUntilRollover, pickForDay, type Verse } from './verse'
 
 type Phase = 'sealed' | 'revealing' | 'revealed'
 
@@ -19,7 +19,7 @@ export default function App() {
   const [error, setError] = useState(false)
 
   useEffect(() => {
-    const update = () => setCountdown(formatCountdown(msUntilMidnightUtc()))
+    const update = () => setCountdown(formatCountdown(msUntilRollover()))
     update()
     const id = window.setInterval(update, 1000)
     return () => window.clearInterval(id)

src/verse.ts

@@ -24,13 +24,17 @@ export interface Verse {
 
 let flat: Verse[] | null = null
 
+const ROLLOVER_LOCAL_HOUR = 2
+
 export function daySeed(now: Date = new Date()): number {
-  return Math.floor(now.getTime() / 86_400_000)
+  const shifted = new Date(now.getTime() - ROLLOVER_LOCAL_HOUR * 3600_000)
+  return Math.floor(Date.UTC(shifted.getFullYear(), shifted.getMonth(), shifted.getDate()) / 86_400_000)
 }
 
-export function msUntilMidnightUtc(now: Date = new Date()): number {
+export function msUntilRollover(now: Date = new Date()): number {
   const next = new Date(now)
-  next.setUTCHours(24, 0, 0, 0)
+  next.setHours(ROLLOVER_LOCAL_HOUR, 0, 0, 0)
+  if (next.getTime() <= now.getTime()) next.setDate(next.getDate() + 1)
   return next.getTime() - now.getTime()
 }