isoweek
A lightweight Dart package which provides the class Week (based on the local time). Instances represent specific weeks spanning Monday to Sunday. An ISO week-numbering year has 52 or 53 full weeks. Week 1 is defined to be the first week with 4 or more days in January.
It’s called isoweek because this is the week definition of ISO 8601. This package is inspired by the isoweek Python package.
Example
import 'package:isoweek/isoweek.dart'; void main() { Week currentWeek = Week.current(); print('Current week: $currentWeek'); //OUTPUT: 2021W13 print('Days of current week: ${currentWeek.days}'); //OUTPUT: [2021-03-29 00:00:00.000, 2021-03-30 00:00:00.000, ...] Week nextWeek = currentWeek.next; print('Days of next week: ${nextWeek.days}'); //OUTPUT: Days of next week: [2021-04-05 00:00:00.000, 2021-04-06 00:00:00.000, ...] Week previousWeek = currentWeek.previous; print('Days of previous week: ${previousWeek.days}'); //OUTPUT: Days of previous week: [2021-03-22 00:00:00.000, 2021-03-23 00:00:00.000, ...] Week futureWeek = currentWeek.addWeeks(5); print('5 weeks ahead: $futureWeek'); //OUTPUT: 5 weeks ahead: 2021W18 Week birthdayWeek = Week.fromDate(DateTime(2020, 11, 16)); print( 'The week number of my birthday in 2020 was ${birthdayWeek.weekNumber}'); //OUTPUT: The week number of my birthday in 2020 was 47 Week weekFromIso = Week.fromISOString('2021W25'); print('Week from ISO string: $weekFromIso'); //OUTPUT: Week from ISO: 2021W25 DateTime firstDay = weekFromIso.day(0); print('The Week $weekFromIso starts with $firstDay'); //OUTPUT: The Week 2021W25 starts with 2021-06-21 00:00:00.000 }