Epoch & Unix Timestamp in C#

Get the current epoch timestamp

long epochSeconds = DateTimeOffset.UtcNow.ToUnixTimeSeconds();

Convert epoch to date

DateTimeOffset dto = DateTimeOffset.FromUnixTimeSeconds(1718200000);

Convert date to epoch

long epoch = new DateTimeOffset(2026, 6, 12, 0, 0, 0, TimeSpan.Zero).ToUnixTimeSeconds();