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Hello!

Yesterday I took several sights of Venus. My results puzzle me greatly...

AP: 60°6,6'N 29°56,8'E
HoE: 3m; Dip corr = -3,0'
WE: -0^h00^m35^s; fast

2020-04-05UT16: GHA_Venus = 15°24,1'; dGHA = 15°0,1'/hr; Dec_Venus = 24°34,6'; dDec = 0,6'/hr

LoP#1
16:05:05; WT
-0:00:35; WE
16:04:30: UT₁

42°00,6'; H_S
-0°00,2'; IE
-0°03,0'; Dip corr.
41°57,4': H_A
-0°01,1; Refr. correction (stars and planets)
41°56,3'; H_O
42°08,5'; H_C
12,2 nm AWAY

When I got this huge intercept I immediatelly re-checked the IE and WE values, both proved to be as per used in the reduction. I thought it was some sort of H_S reading error. I took my next sight.

LoP#2

16:22:30; WT
-0:00:35: WE
16:21:55; UT₂

40°02,1'; H_S
-0°00,2'; IE
-0°03,0'; Dip corr.
39°58,9'; H_A
-0°1,2'; Refr. corr. (stars and planets)
39°57,7'; H_O
40°10,1'; H_C
12,4 nm AWAY

At this point I re-confirned my AP coordinates - they were as per used in the reduction.

I took three more Venus sights - all gave me the same ~12nm-away intercepts.

Trying to understand what could go wrong - I thought I could misread my digital wrist-watch (Casio), so I attempted to search the UT for which those H_S's would give reasonable intercepts. So, if I somehow could misread 16:07:05 as 16:05:05 it would position me closer to my GPS QTH, but the same ~two-minutes offset would need to occur in all five sights: 16:24:30 instead of 16:22:30 etc, unrealistic "explanation", I think.

What can it be? Some huge blunder on my side? A local scale error on my СНО-Т?

Thank you in advance for all the comments and hints.

Warm regards,
Tony
60°N 30°E