Be warned that transport services are likely to be VERY well patronised
around the beginning and end of any school or university holiday period.
These change yearly (the overall pattern is changing now; details, anyone?)
so anything more specific would be pointless.  Watch out for the:
Last week of January/first week of February
Last week of February/first week of March
First and third/fourth weeks of May
First two weeks of July
Last week of August/second week of September
First two weeks of November
Third week of December

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