diff --git a/docs/blog/mediabunny-now-supports-hls.md b/docs/blog/mediabunny-now-supports-hls.md
index 048de18..2a52bbb 100644
--- a/docs/blog/mediabunny-now-supports-hls.md
+++ b/docs/blog/mediabunny-now-supports-hls.md
@@ -207,6 +207,7 @@ const audioSource = new MediaStreamAudioTrackSource(micTrack, {
 	bitrate: QUALITY_HIGH,
 }, { timestampBase: 'unix' });
 
+// The "unix" stuff ensures that #EXT-X-PROGRAM-DATE-TIME gets generated
 output.addVideoTrack(videoSourceFull, { isRelativeToUnixEpoch: true });
 output.addVideoTrack(videoSource480p, { isRelativeToUnixEpoch: true });
 output.addAudioTrack(audioSource, { isRelativeToUnixEpoch: true });