// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

syntax = "proto3";

package google.type;

option go_package = "google.golang.org/genproto/googleapis/type/date;date";
option java_multiple_files = true;
option java_outer_classname = "DateProto";
option java_package = "com.google.type";
option objc_class_prefix = "GTP";

// Represents a whole or partial calendar date, such as a birthday. The time of
// day and time zone are either specified elsewhere or are insignificant. The
// date is relative to the Gregorian Calendar. This can represent one of the
// following:
//
// * A full date, with non-zero year, month, and day values.
// * A month and day, with a zero year (for example, an anniversary).
// * A year on its own, with a zero month and a zero day.
// * A year and month, with a zero day (for example, a credit card expiration
//   date).
//
// Related types:
//
// * [google.type.TimeOfDay][google.type.TimeOfDay]
// * [google.type.DateTime][google.type.DateTime]
// * [google.protobuf.Timestamp][google.protobuf.Timestamp]
message Date {
  // Year of the date. Must be from 1 to 9999, or 0 to specify a date without
  // a year.
  int32 year = 1;

  // Month of a year. Must be from 1 to 12, or 0 to specify a year without a
  // month and day.
  int32 month = 2;

  // Day of a month. Must be from 1 to 31 and valid for the year and month, or 0
  // to specify a year by itself or a year and month where the day isn't
  // significant.
  int32 day = 3;
}