OIC - Converting Unix Timestamps to Standard Time in JavaScript

🧐 Use Case

When working with data that uses Unix timestamps (like logs, APIs, or databases), it's essential to display them in a human-readable format (YYYY-MM-DD HH:mm:ss). JavaScript provides built-in methods to handle this, but careful handling of timezones, padding for single-digit numbers, and date formatting is needed.

💡 Solution Steps

1️⃣ Parse the Unix timestamp: Convert the numeric Unix timestamp to a Date object.
2️⃣ Extract date components: Use JavaScript's Date methods to extract the year, month, day, hour, minute, and second in UTC.
3️⃣ Pad single-digit numbers: Ensure numbers like 9 become "09" for consistent formatting.
4️⃣ Assemble the formatted string: Concatenate all components into a standard format YYYY-MM-DD HH:mm:ss.

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📜 JavaScript Code: UnixToStandardTime.js

function UnixToStandard(TS) {
    TS = Number(TS);
    var date = new Date(TS);

    // Helper to pad with leading zeros
    function pad(n) {
        return n.toString().padStart(2, '0');
    }

    var Y = date.getUTCFullYear();
    var M = pad(date.getUTCMonth() + 1); // Months are zero-based
    var D = pad(date.getUTCDate());
    var H = pad(date.getUTCHours());
    var m = pad(date.getUTCMinutes());
    var s = pad(date.getUTCSeconds());
    var result = Y + "-" + M + "-" + D + " " + H + ":" + m + ":" + s;
    return result;
}

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🚀 Usage Example

let timestamp = 1696177311000; // Example Unix timestamp
console.log(UnixToStandard(timestamp)); // Output: e.g., "2023-10-01 17:15:11"

This approach ensures reliable and standardized UTC time conversion, making it easier to display and interpret timestamps across different systems!

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