From 0d4a0f7a45d91b41c339ed361c49f27dc1565a88 Mon Sep 17 00:00:00 2001
From: Eugene M <ymatviych@bnl.gov>
Date: Thu, 5 Sep 2024 15:03:38 -0400
Subject: [PATCH] ENH: support for datetime types

---
 tiled/_tests/test_zarr.py | 4 +++-
 tiled/server/zarr.py      | 1 +
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/tiled/_tests/test_zarr.py b/tiled/_tests/test_zarr.py
index d5e4db772..c3fa49256 100644
--- a/tiled/_tests/test_zarr.py
+++ b/tiled/_tests/test_zarr.py
@@ -32,9 +32,11 @@
     "dtype_c": (numpy.arange(10) * 1j).astype("c"),
     "dtype_S": numpy.array([letter * 3 for letter in string.ascii_letters], dtype="S3"),
     "dtype_U": numpy.array([letter * 3 for letter in string.ascii_letters], dtype="U3"),
+    "dtype_m": numpy.array(['2007-07-13', '2006-01-13', '2010-08-13'], dtype='datetime64') - numpy.datetime64('2008-01-01'),
+    "dtype_M": numpy.array(['2007-07-13', '2006-01-13', '2010-08-13'], dtype='datetime64'),
     "random_2d": rng.random((10, 10)),
 }
-# TODO "datetime64", bitfield "t", void "v", and object "O" (which is not supported by default)
+# TODO bitfield "t", void "v", and object "O" (which is not supported by default)
 scalar_cases = {
     k: numpy.array(v[0], dtype=v.dtype)
     for k, v in array_cases.items()
diff --git a/tiled/server/zarr.py b/tiled/server/zarr.py
index d6007d976..f62fd5d9b 100644
--- a/tiled/server/zarr.py
+++ b/tiled/server/zarr.py
@@ -76,6 +76,7 @@
     "id": "blosc",
     "shuffle": 1,
 }
+ZARR_DATETIME64_PRECISION = 'ns'
 
 import numcodecs