DFW Daylight Savings Time Transition and ATSC

Fall 2021

Daylight savings time ends on 7 November which means that stations should begin sending PSIP data to that effect on 8 October. The details on how this process should be managed are in ATSC A/65, Annex A and FCC regulations require that all except low power stations follow the standard.

6 October

Something very odd happened at KXTX overnight. For a couple of hours they dropped the in daylight savings time flag:

KXTX (RF 36)KXTX DST change information

At the same time the time they sent shifted by about 23,600 seconds.

7 October

Rather surprisingly after the poor performance this spring, only one station jumped the gun this morning.

KDTN (RF 29)KDTN DST change information

Followed by three more late in the evening

KFWD (RF 9)KFWD DST change information

KDTX (RF 21)KDTX DST change information

KAZD (RF 31)KAZD DST change information

I don't understand why they would do it at three hours early.

But four isn't a horrible number, I guess.

8 October

This is the day they should be doing this.

KTVT (RF 19)KTVT DST change information

KXAS (RF 24)KXAS DST change information

KDFI (RF 27)KDFI DST change information

KUVN (RF 33)KUVN DST change information

KXTX (RF 36)KXTX DST change information

10 October

Five more on Saturday. A day late isn't much of a problem because nobody provides a months worth of schedule data.

WFAA (RF 8)WFAA DST change information

KERA (RF 14)KERA DST change information

KTXD (RF 23)KTXD DST change information

KPXD (RF 25)KPXD DST change information

KMPX (RF 30)KMPX DST change information

That leaves three stations that have done nothing so far: KTXA, KDAF, and KDFW.

History

I have been doing this since 2015 and previous versions of this page can be found at the Internet Archive. I have archived the raw data and can provide it on request.

ATSC Monitoring

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