00:00', '2020-01-09 22:00:00',
               '2020-01-09 23:00:00', '2020-01-10 00:00:00'],
              dtype='datetime64[ns]', length=217, freq='h')</code></pre>
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<div class="sourceCode cell-code" id="cb4"><pre class="sourceCode python code-with-copy"><code class="sourceCode python"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a><span class="co"># Pandas ceil fails on month</span></span>
<span id="cb4-2"><a href="#cb4-2" ar