photobiology: tz_time_diff – R documentation

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tz_time_diff

Time difference between two time zones

Description

Returns the difference in local time expressed in hours between two time zones at a given instant in time. The difference due to daylight saving time or Summer and Winter time as well as historical changes in time zones are taken into account.

Usage

tz_time_diff(
  when = lubridate::now(),
  tz.target = lubridate::tz(when),
  tz.reference = "UTC"
)

Arguments

`when`	datetime A time instant
`tz.target, tz.reference`	character Two time zones using names recognized by functions from package 'lubridate'

Value

A numeric value.

Note

This function is implemented using functions from package 'lubridate'. For details on the handling of time zones, please, consult the documentation for Sys.timezone about system differences in time zone names and handling.

photobiology

Photobiological Calculations

v0.10.10

GPL (>= 2)

Authors

Pedro J. Aphalo [aut, cre] (<https://orcid.org/0000-0003-3385-972X>), Titta K. Kotilainen [ctb] (<https://orcid.org/0000-0002-2822-9734>), Glenn Davis [ctb], Agnese Fazio [ctb]

Initial release

2022-03-24