convert-timezone ( timestamp duration -- timestamp ) - Factor Documentation

convert-timezone ( timestamp duration -- timestamp )
Calendar

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Vocabulary
calendar

Inputs

timestamp a timestamp

duration a duration

Outputs

timestamp a timestamp

Word description
Converts the timestamp's gmt-offset to the GMT offset represented by the duration.

Examples

USING: accessors calendar prettyprint ; now-gmt noon instant -5 >>hour convert-timezone gmt-offset>> hour>> .
-5

See also
local-time , >local-time , convert-local-time , gmt , >gmt , convert-gmt , utc , >utc , convert-utc

Definition

USING: accessors calendar.private kernel ;

: convert-timezone ( timestamp duration -- timestamp )
[ over gmt-offset>> time- (time+) ] [ >>gmt-offset ] bi ;