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Handling Date Comparisons in Node.js with Moment.js and UTC Offsets

๐Ÿ‘€ Views: 24 ๐Ÿ’ฌ Answers: 1 ๐Ÿ“… Created: 2025-06-14
node.js moment.js date JavaScript

I'm experimenting with I'm not sure how to approach I'm working on a project and hit a roadblock. I'm currently working on a Node.js application using Moment.js to handle date comparisons, and I'm running into issues with UTC offsets... The goal is to compare two dates to check if one is earlier than the other, but the results seem inconsistent depending on the timezone settings. For example, I'm trying to compare the following dates: ```javascript const moment = require('moment'); const date1 = moment.tz('2023-10-15T12:00:00', 'America/New_York'); const date2 = moment.tz('2023-10-15T15:00:00', 'America/Los_Angeles'); console.log(date1.isBefore(date2)); // Expected: true ``` However, when I run this code, I get `false`, which leads me to believe that the timezone calculations are not being applied correctly. I've tried manually converting both dates to UTC before comparison: ```javascript date1.utc(); date2.utc(); console.log(date1.isBefore(date2)); // Still false ``` This doesn't seem to solve the scenario, and Iโ€™m not sure if Iโ€™m misunderstanding how Moment.js handles timezones or if thereโ€™s a better way to approach this. Iโ€™ve also checked that both moment-timezone and moment are at version 2.29.1. Any guidance would be appreciated! My development environment is macOS. How would you solve this? I'm working in a Debian environment. I appreciate any insights! The project is a application built with Javascript. For context: I'm using Javascript on Ubuntu 20.04. Any advice would be much appreciated.