23 May 1940 GMT, GST, FST and BST...

[Thierry K]

On 23 May 1940, Oblt Joppien and Hptm Pitcairn of 1./JG51 claimed one Dewoitine each at around 16.30h (German summer time: GST = GMT+2h) = 15.30h (French summer time: FST=GMT+1h)
The French GC 1/3 reported the losses of Cpt Schneider and group CO Cpt Joël Pape.
According to their accounts, Schneider was shot down first by the German wingman flying close to his leader, Joël Pape crash-landed at Carency (10kmN/NW/Arras)
and his "broken watch said 15.20h" (FST)
(Sources: Ailes Françaises N°3, Avions HS N°14-GC 1/3)
The same day in the morning , Fws Heinz Bär and Josef Oglodek also of 1./JG51 claimed one Hurricane each. Curiously enough at the same location (Bethune) and more at the same time : 11.10h (GST) = 9.10h GMT or 10.10h (British summer time: BST=GMT+1h).
Was only one Hurricane lost over Bethune at 10.10h BST ?
Thank you for help
Thierry