Tge time pieces that Markham and Bowley relied on were never compared with a reference or were even read/transcribed coorectly.
Neither were the clocks that DPD dispatchers worked with, despite the fact that the supervisor of the dispatchers, J.C. Bowles is on record stating that those clocks were not synchronized and "indicated the incorrect time".
Bowley picked up his daughter from school and schools usually ring there bell on time. If school was out at 1:00 PM, which seems likely to me, and Bowley was already waiting, it is fair and safe to assume he would have left the school at 1:00 PM.
Add on 13 minutes for the drive to 10th Street and he gets there at 1:13 PM, maybe a minute or so after the shooting had taken place.
Markham took the same bus to work every day and she knew she had to be at the bus stop on Jefferson at 1:15 PM, where she would either take a delayed 1:12 bus or the next one at 1:22.
The distance of two blocks she had to walk between 9th Street and Jefferson was (according to the FBI) between 5 to 6 minutes, being approx 2,5 to 3 minutes for each block.
It is highly unlikely that Markham would still be on the corner of 10th and Patton at 1:14 when the shooting allegedly happened.
A third indication that the shooting took place earlier that 1:14 or 1:15 is the fact that the ambulance carrying Tippit arrived at the hospital and attempts were made to revive Tippit until he was declared D.O.A. on 1:15 PM, which is also the time confirmed by DPD officer Davenport, who followed the ambulance to the hospital.
The irony of the LN claim is that all the clocks were wrong except of course those used by the DPD dispatchers. Never mind that the J.C. Bowles said that the DPD clocks did not give the correct time!