Unix Timestamps in C# / .NET

using System;

// 1. Current timestamp
long currentSec = DateTimeOffset.UtcNow.ToUnixTimeSeconds();
long currentMs  = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();

// 2. Convert timestamp (1710000000) to DateTimeOffset
DateTimeOffset dto = DateTimeOffset.FromUnixTimeSeconds(1710000000);
Console.WriteLine(dto.ToString("o")); // ISO 8601 UTC

// 3. Parse date string to timestamp
long ts = DateTimeOffset.Parse("2026-10-02T12:00:00Z").ToUnixTimeSeconds();