[sustran] dates for world car free day

[SUSTRAN Network Secretariat]

I am amazed and encouraged by the response, especially from Car Busters who
have clearly been working on this for some time! I just received their
latest e-bulletin which also details their proposal for a World Car Free Day!

Concerning dates:

Carbusters wrote:
>So, we thought to move the day forward to Thursday 21 September.  With

and "Lanyon, Ryan" <lanyonry at rmoc.on.ca> wrote:
>'Clean Air Day' is already an event sponsored by Environment Canada, it
>just so happens to be the Wednesday of Envrionment Week/Commuter
> Challenge each year.  This year's events take place from June 5-9,
> with Clean Air Day happening on June 7.

It would be nice (but not essential) to find a date when most of the global
population is enjoying moderate weather - because we hope to give as many
people as possible a chance to have a positive initial
walking/cycling/public transport experience. 

Fortunately, the Car Busters proposal for late September seems to be OK
weatherwise. And building on momentum of the already-declared European
event seems like a very good idea.  September could still be pretty hot in
much of southwest Asia (eg the Arabian Gulf) but in most other parts of the
world I think Sept 21 would probably have pretty good weather, on average.
This date also avoids major university and school examination times in most
places (as far as I know). October may be the month with the best overall
average weather around the populated parts of the world - which may explain
why October is already so crowded with "international days". March might
also be OK I think (but April and May are too hot in monsoon and desert
parts of northern hemisphere).