Source code for gdt.missions.gifts.time

#
# Copyright 2026 by University College Dublin. All rights reserved.
#
# Developed by: Derek O'Callaghan
#               University College Dublin
#               https://www.ucd.ie/
#
# Builds on:
#               Gamma-ray Data Tools - Core Components (https://github.com/USRA-STI/gdt-core)
#               Gamma-ray Data Tools - Fermi mission components (https://github.com/USRA-STI/gdt-fermi/)
#
# 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.
#
from astropy.time import TimeFromEpoch, Time

from gdt.missions.fermi.time import GbmBurstNumber

__all__ = ['GiftsSecTime', 'GiftsBurstNumber', 'Time']




class GiftsSecTime(TimeFromEpoch):
    """Represents the number of seconds elapsed since Jan 1, 2001, 00:00:00 UTC,
    including leap seconds
    """
    name = 'gifts'
    """(str): Name of the mission"""

    unit = 1.0 / 86400
    """(float): unit in days"""

    epoch_val = '2001-01-01 00:01:04.184'
    """(str): The epoch in Terrestrial Time"""

    epoch_val2 = None

    epoch_scale = 'tt'
    """(str): The scale of :attr:`epoch_val`"""

    epoch_format = 'iso'
    """(str): Format of :attr:`epoch_val`"""





class GiftsBurstNumber(GbmBurstNumber):
    """
    Represent date as GIFTS burst number.

    For now, this reuses the Fermi-GBM burst number implementation.
    """

    name = 'gifts_bn'
    """(str): The name of the time format"""