def getGCPList(MGRS):
	from google.cloud import storage
	from oauth2client.service_account import ServiceAccountCredentials
	import os
	import firebase_admin
	from firebase_admin import credentials
	from firebase_admin import db
	cred = credentials.Certificate('servicekey.json')

        # Initialize the app with a service account, granting admin privileges 
	#firebase_admin.initialize_app(cred, {'databaseURL': 'https://farmbase-b2f7e-31c0c.firebaseio.com/'})
	storage_client = storage.Client()
	bucket_name = 'gcp-public-data-sentinel-2'
	bucket = storage_client.bucket(bucket_name)
	b1 = MGRS[0:2]
	b2 = MGRS[2:3]
	b3 = MGRS[3:]
	single_blob = 'tiles/' + b1 + '/' + b2 + '/' + b3
	print(single_blob)
	iter = 0
	latest_day = 0
	latest_blob = 'a'
	for blob in storage_client.list_blobs(bucket_name, prefix=single_blob):
		blob_date = blob.name
		blob_date= blob_date.replace(single_blob, '')
		blob_date = blob_date[12:20]
		if iter ==0:
			latest_day = blob_date
			latest_blob = blob.name
		iter = iter + 1
		if blob_date > latest_day:
			latest_day = blob_date
			latest_blob = blob.name
	print(latest_day)
	return latest_blob
		#print(blob_date)