How convert "2020-09-14T14:04:43.123+0000" to Datetime "YYYY-MM-DD HH24:MI:SS" and add minutes in XQuery.
To convert the used dateTime format to the one the xs:dateTime
constructor functions expects you could insert a colon:
xs:dateTime("2020-09-14T14:04:43.123+0000" => replace('([0-9)][0-9])([0-9][0-9])$', '$1:$2'))
To add some minutes add an xs:dayTimeDuration
with the right M
(minutes) component e.g.
xs:dateTime("2020-09-14T14:04:43.123+0000" => replace('([0-9)][0-9])([0-9][0-9])$', '$1:$2')) + xs:dayTimeDuration('PT12M')
To format construct the right picture string for format-dateTime
e.g.:
format-dateTime(xs:dateTime("2020-09-14T14:04:43.123+0000" => replace('([0-9)][0-9])([0-9][0-9])$', '$1:$2')) + xs:dayTimeDuration('PT12M'), '[Y0001]-[M01]-[D01] [H01]24:[m01]:[s01]')