gmt-offset ( timestamp timezone-name -- gmt-offset )


Vocabulary
zoneinfo

Inputs
timestampan object
timezone-namean object


Outputs
gmt-offsetan object


Definition
USING: calendar interval-maps kernel ;

IN: zoneinfo

: gmt-offset ( timestamp timezone-name -- gmt-offset )
[ timestamp>unix-time ] [ raw-zones>interval-map ] bi*
interval-at ;