(Please don’t post a comment or a “thanks” as a solution. Only answers to the original question should be posted this way.)
My comment: Time-formats are origionaly meant to be used for TimeOfDay
only. Following mandatory conventions the three parts all are rounded down. You may use the seconds-part with decimals like in SS.000
to circumvent the problem (by downrounded number of milliseconds) e.g, but this is not supported for the minutes part.
The [H]
is a kind of a monster helping a bit when trying to ignore the conceptual incompatibilities between TOD and duration - for which no appropriate formatting is provided - as also is not for traditional formatting of angles. Avoid the conflicts.
(Silly “decimal angular minutes” seem to be a rather young invention by programmers for navigation equipment.)