You can declare dates in UTC format and get it back as epoch as well using datetime().
WITH datetime('2015-07-21T21:40:32.142+0100') AS date1 RETURN date1.epochMillis
I am not sure what your exact use-case is, but to feed a date into a query you have...
Hi taffyb,
You should be able to use the apoc library methods: apoc.date.parse() and apoc.date.format() to achieve what you are looking for.
As an example, to convert the current timestamp in epoch that is returned by timestamp() function to a friend...