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fix: derive upcoming fixture day label from computed local kickoff time

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Previously used the stored venue date for Today/Tomorrow logic, which
gave wrong results when the UTC kickoff crossed midnight into the next
local day (e.g. 18:00 UTC-7 = 01:00 UTC next day). Now computes UTC
kickoff first, converts to the viewer's local time, and derives the
day label from that local Date object.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Sebastian Krüger
2026-06-15 19:34:20 +02:00
parent 47eb5092e9
commit 015f6c2ef3
1 changed files with 20 additions and 16 deletions
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app/page.tsx
+20 -16
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@@ -57,26 +57,30 @@ function formatKickoff(date: string | null | undefined, time: string | null | un
if (!date) return ''
const today = new Date()
const tomorrow = new Date(today); tomorrow.setDate(today.getDate() + 1)
if (time) {
const m = time.match(/^(\d{2}):(\d{2})(?:\s+UTC([+-]\d+(?:\.\d+)?))?/)
if (m) {
const [y, mo, d] = date.split('-').map(Number)
const h = parseInt(m[1]), min = parseInt(m[2])
const offsetH = m[3] ? parseFloat(m[3]) : 0
// Compute UTC kickoff, then let the browser render in its local timezone
const local = new Date(Date.UTC(y, mo - 1, d, h - offsetH, min))
const isToday = local.toDateString() === today.toDateString()
const isTomorrow = local.toDateString() === tomorrow.toDateString()
const dayLabel = isToday ? 'Today' : isTomorrow ? 'Tomorrow'
: local.toLocaleDateString('en-GB', { weekday: 'short', day: 'numeric', month: 'short' })
const localTime = local.toLocaleTimeString('en-GB', { hour: '2-digit', minute: '2-digit' })
return `${dayLabel} · ${localTime}`
}
}
// No time — fall back to venue date label only
const matchDate = new Date(date + 'T00:00:00')
const isToday = matchDate.toDateString() === today.toDateString()
const isTomorrow = matchDate.toDateString() === tomorrow.toDateString()
const dayLabel = isToday ? 'Today' : isTomorrow ? 'Tomorrow'
return isToday ? 'Today' : isTomorrow ? 'Tomorrow'
: matchDate.toLocaleDateString('en-GB', { weekday: 'short', day: 'numeric', month: 'short' })
if (!time) return dayLabel
// Parse "HH:MM UTC±N" and convert to viewer's local time
const m = time.match(/^(\d{2}):(\d{2})(?:\s+UTC([+-]\d+(?:\.\d+)?))?/)
if (!m) return dayLabel
const h = parseInt(m[1]), min = parseInt(m[2])
const offsetH = m[3] ? parseFloat(m[3]) : 0
const utcMs = Date.UTC(
matchDate.getFullYear(), matchDate.getMonth(), matchDate.getDate(),
h - offsetH, min
)
const local = new Date(utcMs)
const localTime = local.toLocaleTimeString('en-GB', { hour: '2-digit', minute: '2-digit' })
return `${dayLabel} · ${localTime}`
}
function UpcomingFixture({ match }: { match: UpcomingMatch }) {