What the CHU chirps say;
Day: 67, Hour: 21, Minute: 40, Second: 32
Day: 67, Hour: 21, Minute: 40, Second: 33
Day: 67, Hour: 21, Minute: ??, Second: 34
Day: 67, Hour: 21, Minute: 40, Second: 35
Day: 67, Hour: 21, Minute: 40, Second: 36
Day: 67, Hour: 21, Minute: 40, Second: 37
Day: 67, Hour: 21, Minute: 40, Second: 38
Day: 67, Hour: 21, Minute: 40, Second: 39
Year: 2019, TAI-UTC: 37s, DUT1: -0.1s, no Leap Second, DSTpatCode: 5
Day: 67, Hour: 21, Minute: 41, Second: 32
Day: 67, Hour: 21, Minute: 41, Second: 33
Day: 67, Hour: 21, Minute: 41, Second: 34
Day: 67, Hour: 21, Minute: 41, Second: 35
Day: 67, Hour: 21, Minute: 41, Second: 36
Day: 67, Hour: 21, Minute: 41, Second: 37
Day: 67, Hour: 21, Minute: 41, Second: 38
Day: 67, Hour: 21, Minute: 41, Second: 39
"Between 31 and 39 seconds past the minute inclusive, the once-per-second tones are reduced to 10-millisecond "ticks" while a digital time code is transmitted. The digital time code is formatted so that a Bell 103-compatible 300-baud modem can decode it,[4] and CHU is the only time signal station that uses this format for its time code transmissions."
https://en.wikipedia.org/wiki/CHU_(radio_station)