I once had a clock that runs backwards, i.e.: counter clockwise. There are so few clocks in the wild, that after a while I realized it was the only analog clock I saw regularly. Not only that, but I became used to the backwards rotation, so that when I did see an analog clock, I had to re-adjust so I could read the time!
%!PS-Adobe-3.0
%%Creator: Toby Thurston
%%Title: (Pages of pedagogical clocks)
%%CreationDate: (2014-02-14)
%%BoundingBox: 12 12 600 780
%%Pages: 1
%%EndComments
<< /PageSize [612 792] >> setpagedevice
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15 cr mul 3 cr mul 33 cr mul 0 cr mul 50 cr mul 3 cr mul curveto
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% draw the minute marks
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% numbers
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297 480 translate
120
(%Calendar%) /IODevice resourcestatus {
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50 -55 translate
4 {
5 { 0 165 translate % a page of clocks for learners
50 rand 12 mod rand 60 mod clock
% line underneath
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75 -55 translate
4 {
5 { 0 165 translate % whole multiple of five minutes only
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146 5 165 mul neg translate
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%%Page: 4 4
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75 -55 translate
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5 { 0 165 translate % quarter hours only
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146 5 165 mul neg translate
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75 -55 translate
4 {
5 { 0 165 translate % empty clocks
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%%Eof
