diff --git a/docs/users/Releases.mdx b/docs/users/Releases.mdx
index 81c6b504dddc..58a4e5c6175d 100644
--- a/docs/users/Releases.mdx
+++ b/docs/users/Releases.mdx
@@ -8,13 +8,44 @@ import useIsBrowser from '@docusaurus/useIsBrowser';
export function LocalTimeOfRelease() {
const isBrowser = useIsBrowser();
- // An arbitrary Monday at 17:00 UTC.
- const date = new Date('1970-01-05T17:00Z');
- const formatted = date.toLocaleTimeString('en-US', {
+ if (!isBrowser) {
+ // An arbitrary Monday at 17:00 UTC.
+ const arbitraryMonday = new Date('1970-01-05T17:00Z');
+ return arbitraryMonday.toLocaleTimeString('en-US', {
+ hour: 'numeric',
+ minute: '2-digit',
+ timeZoneName: 'short',
+ timeZone: 'UTC',
+ });
+ }
+ const now = new Date();
+ const daysAgoToMonday = (now.getUTCDay() + 6) % 7;
+ // Calculate the previous Monday at 17:00 UTC.
+ const previousReleaseDate = new Date(
+ Date.UTC(
+ now.getUTCFullYear(),
+ now.getUTCMonth(),
+ now.getUTCDate() - daysAgoToMonday,
+ 17,
+ ),
+ );
+ // This will happen if the current time is before 17:00 UTC on Monday.
+ if (previousReleaseDate > now) {
+ previousReleaseDate.setUTCDate(previousReleaseDate.getUTCDate() - 7);
+ }
+ // Next release is 7 days later.
+ const nextReleaseDate = new Date(previousReleaseDate.getTime());
+ nextReleaseDate.setUTCDate(previousReleaseDate.getUTCDate() + 7);
+ // If we're near a DST time change, we want to display the time of the release that has the same UTC offset as now.
+ // If, for some reason, neither does, just display the local time of the next release.
+ const releaseWithSameUtcOffset =
+ [nextReleaseDate, previousReleaseDate].find(
+ date => date.getTimezoneOffset() === now.getTimezoneOffset(),
+ ) ?? nextReleaseDate;
+ const formatted = releaseWithSameUtcOffset.toLocaleTimeString('en-US', {
hour: 'numeric',
minute: '2-digit',
timeZoneName: 'short',
- timeZone: isBrowser ? undefined : 'UTC',
});
// Specify the day of week if it's not a Monday.
const dayNames = [
@@ -26,8 +57,10 @@ export function LocalTimeOfRelease() {
'Friday',
'Saturday',
];
- if (date.getDay() !== date.getUTCDay()) {
- return `${dayNames[date.getDay()]}s at ${formatted}`;
+ if (
+ releaseWithSameUtcOffset.getDay() !== releaseWithSameUtcOffset.getUTCDay()
+ ) {
+ return `${dayNames[releaseWithSameUtcOffset.getDay()]}s at ${formatted}`;
}
return formatted;
}
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