bm_group_867 = {
	default_start_date = 867.1.1
}

bm_group_1066 = {
	default_start_date = 1066.9.15
}

bm_group_1178 = {
	default_start_date = 1178.10.1
}
bm_group_2555 = {
	default_start_date = 2555.1.1
}