The online schedule for Cynwyd*
http://septa.org/schedules/rail/w/CYN_1.html says "except major holidays", which is essentially useless by itself. I'm tempted to agree with ExCon90 ... but this
is SEPTA, after all, so my suggestion would be to try calling their customer line plus check the bus schedules for their, uh, "alternate service"**
* rather than "Cynwood". Lotsa Welsh names around here
. Nothing like telling someone you live in Tredyffrin or Uwchlan!
** usually better than "alternate facts", but sometimes there's more than a little similarity...
Requiem for it's/its, your/you're, than/then, less/fewer. They were once such nice words with such different meanings...