Add DST notice to TZ entry

src/buttons/event-creation/dateTimeUtils.ts

@@ -84,14 +84,20 @@ const parseEventTime = (preParsedEventTime: string): [string, string, string] =>
 	return [parsedEventTimeHours, parsedEventTimeMinutes, parsedEventTimePeriod];
 };
 
+// Check if DST is currently active
+export const isDSTActive = (): boolean => {
+	const today = new Date();
+	const jan = new Date(today.getFullYear(), 0, 1);
+	const jul = new Date(today.getFullYear(), 6, 1);
+
+	return today.getTimezoneOffset() < Math.max(jan.getTimezoneOffset(), jul.getTimezoneOffset());
+};
+
 // Takes user input Time Zone and makes it actually usable
 const parseEventTimeZone = (preParsedEventTimeZone: string): [string, string] => {
 	if (shorthandUSTZ.includes(preParsedEventTimeZone)) {
 		// Handle shorthand US timezones, adding S for standard time and D for Daylight Savings
-		const today = new Date();
+		if (isDSTActive()) {
-		const jan = new Date(today.getFullYear(), 0, 1);
-		const jul = new Date(today.getFullYear(), 6, 1);
-		if (today.getTimezoneOffset() < Math.max(jan.getTimezoneOffset(), jul.getTimezoneOffset())) {
 			preParsedEventTimeZone = `${preParsedEventTimeZone.slice(0, 1)}DT`;
 		} else {
 			preParsedEventTimeZone = `${preParsedEventTimeZone.slice(0, 1)}ST`;

src/buttons/event-creation/step1-gameSelection.ts

@@ -7,7 +7,7 @@ import { idSeparator, LfgEmbedIndexes, lfgStartTimeName } from '../eventUtils.ts
 import utils from '../../utils.ts';
 import { customId as createCustomActivityBtnId } from './step1a-openCustomModal.ts';
 import { customId as finalizeEventBtnId } from './step2-finalize.ts';
-import { monthsShort } from './dateTimeUtils.ts';
+import { isDSTActive, monthsShort } from './dateTimeUtils.ts';
 import { dbClient, queries } from '../../db.ts';
 
 export const customId = 'gameSel';
@@ -64,6 +64,9 @@ const execute = async (bot: Bot, interaction: Interaction) => {
 				prefillDescription = interaction.message.embeds[0].fields[LfgEmbedIndexes.Description].value.trim();
 			}
 
+			// DST notice to try to get people to use the right TZ
+			const dstNotice = isDSTActive() ? '(Note: DST is in effect in NA)' : '';
+
 			bot.helpers.sendInteractionResponse(interaction.id, interaction.token, {
 				type: InteractionResponseTypes.Modal,
 				data: {
@@ -86,7 +89,7 @@ const execute = async (bot: Bot, interaction: Interaction) => {
 						components: [{
 							type: MessageComponentTypes.InputText,
 							customId: eventTimeZoneId,
-							label: 'Time Zone:',
+							label: `Time Zone: ${dstNotice}`,
 							placeholder: 'Enter your time zone abbreviation (UTC±## also works)',
 							style: TextStyles.Short,
 							minLength: 2,