Производственный календарь России для go

package main

import (
	"time"

	calendar "github.com/shlima/russian_calendar"
)

func main() {
	cal := calendar.New(time.Now())

	// Returns true if today is a day off or a public holiday 
	cal.IsHoliday()
	// Returns true if today is a working day
	cal.IsWorkday()
	// Returns the next business day (including the current one)
	cal.GteWorkday()
	// Returns the previous business day (including the current one)
	cal.LteWorkday()
	// Returns the next business day
	cal.GtWorkday()
	// Returns the previous business day
	cal.LtWorkday()
	// Returns the next weekend day (including the current one)
	cal.GteHoliday()
	// Returns the previous weekend day (including the current one)
	cal.LteHoliday()
	// Returns the next weekend day
	cal.GtHoliday()
	// Returns the previous weekend day
	cal.LtHoliday()

	// Returns the next day
	cal.Next()
	// Returns the previous day
	cal.Prev()
}

package main

import (
	"time"

	calendar "github.com/shlima/russian_calendar"
)

func main() {
	source := &calendar.SourceMap{
		2001: {
			1: {
				1: true,
			},
		},
	}
	
	cal := calendar.NewSourced(time.Now(), source)
	cal.GteHoliday()
}